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DOE OSTI2020

Materials Data on CaMg30CdO32 by Materials Project

CaMg30CdO32 is alpha Po-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ca2+ is bonded to six O2- atoms to form CaO6 octahedra that share corners with six MgO6 octahedra and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.24 Å) and two longer (2.26 Å) Ca–O bond lengths. There are eight inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent CaO6 octahedra, corners with two equivalent MgO6 octahedra, corners with two equivalent CdO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Mg–O bond distances ranging from 2.05–2.18 Å. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent CaO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.05 Å) and four longer (2.17 Å) Mg–O bond lengths. In the third Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.12 Å) and four longer (2.14 Å) Mg–O bond lengths. In the fourth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent CdO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.03 Å) and four longer (2.16 Å) Mg–O bond lengths. In the fifth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one CaO6 octahedra, an edgeedge with one CdO6 octahedra, and edges with ten MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. There are four shorter (2.15 Å) and two longer (2.16 Å) Mg–O bond lengths. In the sixth Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are four shorter (2.15 Å) and two longer (2.16 Å) Mg–O bond lengths. In the seventh Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one CaO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–4°. There are a spread of Mg–O bond distances ranging from 2.13–2.18 Å. In the eighth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one CdO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. There are a spread of Mg–O bond distances ranging from 2.13–2.17 Å. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with six MgO6 octahedra and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.26 Å) and two longer (2.27 Å) Cd–O bond lengths. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded to one Ca2+ and five Mg2+ atoms to form OCaMg5 octahedra that share corners with six OCaMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the second O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OCaMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. In the third O2- site, O2- is bonded to five Mg2+ and one Cd2+ atom to form a mixture of edge and corner-sharing OMg5Cd octahedra. The corner-sharing octahedra tilt angles range from 0–3°. In the fourth O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six equivalent OMg6 octahedra and edges with twelve OCaMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the fifth O2- site, O2- is bonded to one Ca2+ and five Mg2+ atoms to form a mixture of edge and corner-sharing OCaMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. In the sixth O2- site, O2- is bonded to one Ca2+ and five Mg2+ atoms to form a mixture of edge and corner-sharing OCaMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. There are two shorter (2.16 Å) and two longer (2.18 Å) O–Mg bond lengths. In the seventh O2- site, O2- is bonded to five Mg2+ and one Cd2+ atom to form OMg5Cd octahedra that share corners with six OCaMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. The O–Mg bond length is 2.05 Å. In the eighth O2- site, O2- is bonded to five Mg2+ and one Cd2+ atom to form OMg5Cd octahedra that share corners with six OCaMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are a spread of O–Mg bond distances ranging from 2.05–2.17 Å. In the ninth O2- site, O2- is bonded to six Mg2+ atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°. In the tenth O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OMg5Cd octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the eleventh O2- site, O2- is bonded to five Mg2+ and one Cd2+ atom to form OMg5Cd octahedra that share corners with six OCaMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. Both O–Mg bond lengths are 2.17 Å. In the twelfth O2- site, O2- is bonded to five Mg2+ and one Cd2+ atom to form OMg5Cd octahedra that share corners with six OCaMg5 octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are two shorter (2.15 Å) and two longer (2.17 Å) O–Mg bond lengths.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K3Cd(BO2)5 by Materials Project

K3CdB5O10 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. there are three inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.70–3.44 Å. In the second K1+ site, K1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.74–3.34 Å. In the third K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.67–3.44 Å. Cd2+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Cd–O bond distances ranging from 2.17–2.24 Å. There are five inequivalent B3+ sites. In the first B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.35–1.42 Å. In the second B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.35–1.41 Å. In the third B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.36–1.42 Å. In the fourth B3+ site, B3+ is bonded in a tetrahedral geometry to four O2- atoms. There is one shorter (1.48 Å) and three longer (1.49 Å) B–O bond length. In the fifth B3+ site, B3+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of B–O bond distances ranging from 1.34–1.41 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to three K1+ and two B3+ atoms. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two K1+ and two B3+ atoms. In the third O2- site, O2- is bonded in a 1-coordinate geometry to three K1+, one Cd2+, and one B3+ atom. In the fourth O2- site, O2- is bonded in a 4-coordinate geometry to two K1+, one Cd2+, and one B3+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent K1+ and two B3+ atoms. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+, one Cd2+, and one B3+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two equivalent K1+ and two B3+ atoms. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two K1+ and two B3+ atoms. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two K1+ and two B3+ atoms. In the tenth O2- site, O2- is bonded in a 1-coordinate geometry to three K1+, one Cd2+, and one B3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaMg30CdO32 by Materials Project

BaMg30CdO32 is Molybdenum Carbide MAX Phase-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ba2+ is bonded to six O2- atoms to form BaO6 octahedra that share corners with two equivalent CdO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.33 Å) and four longer (2.43 Å) Ba–O bond lengths. There are eight inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent BaO6 octahedra, corners with four MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Mg–O bond distances ranging from 1.92–2.23 Å. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent CdO6 octahedra, corners with four MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Mg–O bond distances ranging from 2.00–2.21 Å. In the third Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.12 Å) and two longer (2.19 Å) Mg–O bond lengths. In the fourth Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.14 Å) and two longer (2.17 Å) Mg–O bond lengths. In the fifth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one BaO6 octahedra, an edgeedge with one CdO6 octahedra, and edges with ten MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–8°. There are a spread of Mg–O bond distances ranging from 2.08–2.27 Å. In the sixth Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of Mg–O bond distances ranging from 2.16–2.19 Å. In the seventh Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one BaO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–10°. There are a spread of Mg–O bond distances ranging from 2.11–2.25 Å. In the eighth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one CdO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–8°. There are a spread of Mg–O bond distances ranging from 2.15–2.20 Å. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with two equivalent BaO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.04 Å) and four longer (2.34 Å) Cd–O bond lengths. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded to one Ba2+ and five Mg2+ atoms to form OBaMg5 octahedra that share corners with six OMg5Cd octahedra and edges with twelve OBaMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. In the second O2- site, O2- is bonded to five Mg2+ and one Cd2+ atom to form OMg5Cd octahedra that share corners with six OBaMg5 octahedra and edges with twelve OMg5Cd octahedra. The corner-sharing octahedra tilt angles range from 0–6°. In the third O2- site, O2- is bonded to six Mg2+ atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. Both O–Mg bond lengths are 2.19 Å. In the fourth O2- site, O2- is bonded to six Mg2+ atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–4°. In the fifth O2- site, O2- is bonded to one Ba2+ and five Mg2+ atoms to form a mixture of edge and corner-sharing OBaMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–6°. There are a spread of O–Mg bond distances ranging from 1.92–2.25 Å. In the sixth O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OMg6 octahedra and edges with twelve OBaMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–5°. In the seventh O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six equivalent OMg6 octahedra and edges with twelve OBaMg5 octahedra. The corner-sharing octahedra tilt angles range from 1–6°. In the eighth O2- site, O2- is bonded to one Ba2+, four equivalent Mg2+, and one Cd2+ atom to form OBaMg4Cd octahedra that share corners with six OBaMg4Cd octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the ninth O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OBaMg4Cd octahedra and edges with twelve OBaMg5 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the tenth O2- site, O2- is bonded to six Mg2+ atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–1°.

36 MATERIALS SCIENCE↗
NASA NTRS1993

Fluidic scale model multi-plane thrust vector control test results

An experimental investigation has been conducted at the NASA Langley 16-Foot Transonic Tunnel Static Test Facility to determine the concept feasibility of using fluidics to achieve multiplane thrust vector control in a 2D convergent-divergent (2D-CD) fixed aperture nozzle. Pitch thrust vector control is achieved by injection of flow through a slot in the divergent flap into the primary nozzle flow stream. Yaw vector control results from secondary air delivered tangentially to vertical Coanda flaps. These flaps are offset laterally and aligned parallel to the primary nozzle side walls. All tests were conducted at static (no external flow) conditions. Flow visualization was conducted using a paint flow technique and Focus Schlieren. Significant levels of pitch deflection angles (19 deg) were achieved at low pressure ratios and practical levels (14 deg) resulted at typical intermediate power settings. The ability of the Coanda surface blowing concept to produce yaw deflection was limited to NPR not greater than 4.

Chiarelli, Charles↗
NASA NTRS1993

Global and regional/seasonal color mosaics of Mars

Four regional mosaics of Mars acquired during different seasons, along with their composite as a single global mosaic, have been completed in two colors (red and violet) at scales of 1/16 and 1/64 degrees/pixel. These mosaics were put together from a set of 51 separate mosaics, each acquired from a single Viking orbiter spacecraft orbital revolution. Special techniques were developed and applied to suppress large variations between mosaics introcued by highly variable, optically thin, condensate hazes. The techniques utilize a combination of the spatial characteristics of the hazes (generally broad, low-frequency) along with their modulation of the reginal color ratios (strongly enhancing the violet/red ratios). Photometric-function normalization was applied following the haze removal. Most of the single-orbit mosaics consist of red and violet or red, green, and violet filters, but a few mosaics with only red-filter data were included to fill gaps in global coverage at high northern latitudes. Global coverage is approximately 99 percent complete in red-filter mosaics and approximately 95 percent and approximately 60 percent complete in corresponding violet- and green-filter mosaics, respectively. All of the mosaics are geometrically tied to the 1/256 deg per pixel Mars Digital Image Map (MDIM), which is available on Compact Disk (CD), and which will be used as the base map for Mars Observer data sets. Early in 1993, the single-orbit color mosaics will be distributed to the science community in a six-volume set of CDs. Perhaps the most scientifically interesting parts of this dataset are the overlap regions, which show significant temporal variations in surface and atmospheric features. Surface changes can be categorized as (1) changes that probably occurred during the great dust storms of 1977; (2) changes that occurred soon after 1977 storms due to removal of redistribution of recently deposited dust; (3) changes in the northern lowlands that probably occurred during the dusty southern summer of 1979 (when no great dust storm occurred); and (4) changes associated with strong slope winds in the Tharsis and Elysium regions.

Mcewen, Alfred S.↗
NASA NTRS2000

BOREAS TE-19 Ecosystem Carbon Balance Model

The BOREAS TE-19 team developed a model called the Spruce and Moss Model (SPAM) designed to simulate the daily carbon balance of a black spruce/moss boreal forest ecosystem. It is driven by daily weather conditions, and consists of four components: (1) soil climate, (2) tree photosynthesis and respiration, (3) moss photosynthesis and respiration, and (4) litter decomposition and associated heterotrophic respiration. The model simulates tree gross and net photosynthesis, wood respiration, live root respiration, moss gross and net photosynthesis, and heterotrophic respiration (decomposition of root litter, young needle and moss litter, and humus). These values can be combined to generate predictions of total site net ecosystem exchange of carbon (NEE), total soil dark respiration (live roots + heterotrophs + live moss), spruce and moss net productivity, and net carbon accumulation in the soil. To date, simulations have been of the BOREAS NSA-OBS and SSA-OBS tower sites, from 1968-95 (except 1990-93). The files include source code and sample input and output files in ASCII format. The data files are available on a CD-ROM (see document number 20010000884), or from the Oak Ridge National Laboratory (ORNL) Distributed Activity Archive Center (DAAC).

Hall, Forrest G.↗
DOE OSTI2023

Spectrum Unfolding with the MC-15

The Multiplicity Counter 15 tube detector or MC-15 is an optimized detector designed for use in the field. It is composed of 15 3 He tubes embedded in high density polyethylene (HDPE). Recent work has explored expanding the use of the MC-15 beyond multiplicity counting to neutron dosimetry applications. Knowledge of the neutron energy spectrum information is required to use a detector as a neutron dosimeter. The MC-15 tube layout is shown in Figure 1. The unique layout makes it possible to use the detector for neutron spectroscopy via spectrum unfolding. Spectrum unfolding requires (1) energy dependence of the detector response, (2) a detector response matrix that precisely quantifies the response to mono-energetic neutrons, (3) an initial guess spectrum, (4) an unfolding algorithm, and (5) measured data (counts in the case of the MC-15). An energy dependent detector response matrix (DRM) can be constructed by considering either each of the three rows of 3 He tubes as a distinct detector or each individual tube as a distinct detector. The HDPE separating the 3 He in the MC-15 provides the distinct energy dependent response for the rows and individual tubes. In this report we detail the development of detector response matrices for the MC-15 and the application of the Los Alamos Unfolding Code (LUC) to both simulated and measured data. Three MC-15 orientations were studied: (1) standard orientation with the MC-15 front facing the source, (2) standard orientation with Cd sheet, (3) 90° orientation with the side of the MC-15 facing the source.

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND ↗
NASA NTRS1999

Transonic Dynamics Tunnel Force and Pressure Data Acquired on the HSR Rigid Semispan Model

This report describes the aerodynamic data acquired on the High Speed Research Rigid Semispan Model (HSR-RSM) during NASA Langley Transonic Dynamics Tunnel (TDT) Test 520 conducted from 18 March to 4 April, 1996. The purpose of this test was to assess the aerodynamic character of a rigid high speed civil transport wing. The wing was fitted with a single trailing edge control surface which was both steadily deflected and oscillated during the test to investigate the response of the aerodynamic data to steady and unsteady control motion. Angle-of-attack and control surface deflection polars at subsonic, transonic and low-supersonic Mach numbers were obtained in the tunnel?s heavy gas configuration. Unsteady pressure and steady loads data were acquired on the wing, while steady pressures were measured on the fuselage. These data were reduced using a variety of methods, programs and computer systems. The reduced data was ultimately compiled onto a CD-ROM volume which was distributed to HSR industry team members in July, 1996. This report documents the methods used to acquire and reduce the data, and provides an assessment of the quality, repeatability, and overall character of the aerodynamic data measured during this test.

Schuster, David M.↗
DOE OSTI2020

Materials Data on Mg30CdSnO32 by Materials Project

Mg30CdSnO32 is alpha Po-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. there are eight inequivalent Mg2+ sites. In the first Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent SnO6 octahedra, corners with four MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Mg–O bond distances ranging from 1.99–2.18 Å. In the second Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with two equivalent CdO6 octahedra, corners with four MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are a spread of Mg–O bond distances ranging from 2.01–2.18 Å. In the third Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.13 Å) and two longer (2.16 Å) Mg–O bond lengths. In the fourth Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.14 Å) and two longer (2.16 Å) Mg–O bond lengths. In the fifth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one CdO6 octahedra, an edgeedge with one SnO6 octahedra, and edges with ten MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–6°. There are a spread of Mg–O bond distances ranging from 2.10–2.22 Å. In the sixth Mg2+ site, Mg2+ is bonded to six O2- atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. There are three shorter (2.16 Å) and three longer (2.17 Å) Mg–O bond lengths. In the seventh Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one SnO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–7°. There are a spread of Mg–O bond distances ranging from 2.12–2.20 Å. In the eighth Mg2+ site, Mg2+ is bonded to six O2- atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one CdO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 0–7°. There are a spread of Mg–O bond distances ranging from 2.14–2.18 Å. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with two equivalent SnO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.12 Å) and four longer (2.30 Å) Cd–O bond lengths. Sn2+ is bonded to six O2- atoms to form SnO6 octahedra that share corners with two equivalent CdO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.20 Å) and four longer (2.33 Å) Sn–O bond lengths. There are eleven inequivalent O2- sites. In the first O2- site, O2- is bonded to five Mg2+ and one Sn2+ atom to form OMg5Sn octahedra that share corners with six OMg5Cd octahedra and edges with twelve OMg5Sn octahedra. The corner-sharing octahedra tilt angles range from 0–5°. In the second O2- site, O2- is bonded to five Mg2+ and one Cd2+ atom to form OMg5Cd octahedra that share corners with six OMg5Sn octahedra and edges with twelve OMg5Cd octahedra. The corner-sharing octahedra tilt angles range from 0–5°. In the third O2- site, O2- is bonded to six Mg2+ atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. Both O–Mg bond lengths are 2.17 Å. In the fourth O2- site, O2- is bonded to six Mg2+ atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. In the fifth O2- site, O2- is bonded to five Mg2+ and one Sn2+ atom to form a mixture of edge and corner-sharing OMg5Sn octahedra. The corner-sharing octahedra tilt angles range from 0–5°. There are a spread of O–Mg bond distances ranging from 1.99–2.20 Å. In the sixth O2- site, O2- is bonded to five Mg2+ and one Cd2+ atom to form a mixture of edge and corner-sharing OMg5Cd octahedra. The corner-sharing octahedra tilt angles range from 0–5°. There are two shorter (2.15 Å) and two longer (2.18 Å) O–Mg bond lengths. In the seventh O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OMg6 octahedra and edges with twelve OMg5Sn octahedra. The corner-sharing octahedra tilt angles range from 0–3°. In the eighth O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six equivalent OMg6 octahedra and edges with twelve OMg5Sn octahedra. The corner-sharing octahedra tilt angles range from 1–4°. In the ninth O2- site, O2- is bonded to four equivalent Mg2+, one Cd2+, and one Sn2+ atom to form OMg4CdSn octahedra that share corners with six OMg4CdSn octahedra and edges with twelve OMg5Sn octahedra. The corner-sharing octahedral tilt angles are 0°. In the tenth O2- site, O2- is bonded to six Mg2+ atoms to form OMg6 octahedra that share corners with six OMg4CdSn octahedra and edges with twelve OMg5Sn octahedra. The corner-sharing octahedral tilt angles are 0°. In the eleventh O2- site, O2- is bonded to six Mg2+ atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedral tilt angles are 0°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Rb2Cd2(SO4)3 by Materials Project

Rb2Cd2(SO4)3 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. there are four inequivalent Rb1+ sites. In the first Rb1+ site, Rb1+ is bonded in a 3-coordinate geometry to eleven O2- atoms. There are a spread of Rb–O bond distances ranging from 2.98–3.49 Å. In the second Rb1+ site, Rb1+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Rb–O bond distances ranging from 2.87–3.38 Å. In the third Rb1+ site, Rb1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Rb–O bond distances ranging from 2.93–3.14 Å. In the fourth Rb1+ site, Rb1+ is bonded in a 8-coordinate geometry to ten O2- atoms. There are a spread of Rb–O bond distances ranging from 2.91–3.54 Å. There are four inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded to six O2- atoms to form distorted CdO6 octahedra that share corners with four SO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.29–2.51 Å. In the second Cd2+ site, Cd2+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Cd–O bond distances ranging from 2.20–2.40 Å. In the third Cd2+ site, Cd2+ is bonded to five O2- atoms to form distorted CdO5 square pyramids that share corners with three SO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.19–2.35 Å. In the fourth Cd2+ site, Cd2+ is bonded to six O2- atoms to form distorted CdO6 octahedra that share corners with four SO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.21–2.49 Å. There are six inequivalent S6+ sites. In the first S6+ site, S6+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of S–O bond distances ranging from 1.50–1.69 Å. In the second S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share a cornercorner with one CdO6 octahedra and a cornercorner with one CdO5 square pyramid. The corner-sharing octahedral tilt angles are 27°. There are a spread of S–O bond distances ranging from 1.48–1.51 Å. In the third S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with three CdO6 octahedra and a cornercorner with one CdO5 square pyramid. The corner-sharing octahedra tilt angles range from 5–46°. There are a spread of S–O bond distances ranging from 1.48–1.50 Å. In the fourth S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with two CdO6 octahedra and a cornercorner with one CdO5 square pyramid. The corner-sharing octahedra tilt angles range from 22–55°. There is one shorter (1.47 Å) and three longer (1.50 Å) S–O bond length. In the fifth S6+ site, S6+ is bonded to four O2- atoms to form SO4 tetrahedra that share corners with two CdO6 octahedra. The corner-sharing octahedra tilt angles range from 26–42°. There are a spread of S–O bond distances ranging from 1.46–1.61 Å. In the sixth S6+ site, S6+ is bonded in a trigonal non-coplanar geometry to three O2- atoms. There are a spread of S–O bond distances ranging from 1.53–1.56 Å. There are twenty-four inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to two Rb1+, one Cd2+, and one S6+ atom. In the second O2- site, O2- is bonded in a 2-coordinate geometry to two Rb1+, one Cd2+, and one S6+ atom. In the third O2- site, O2- is bonded in a 1-coordinate geometry to two Rb1+, one Cd2+, and one S6+ atom. In the fourth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Cd2+ and one S6+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to two Rb1+, one Cd2+, and one S6+ atom. In the sixth O2- site, O2- is bonded in a 1-coordinate geometry to two Rb1+, one Cd2+, and one S6+ atom. In the seventh O2- site, O2- is bonded in a 2-coordinate geometry to two Rb1+, one Cd2+, and one S6+ atom. In the eighth O2- site, O2- is bonded in a 4-coordinate geometry to two Rb1+, one Cd2+, and one S6+ atom. In the ninth O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Cd2+, and one S6+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+, one S6+, and one O2- atom. The O–O bond length is 1.48 Å. In the eleventh O2- site, O2- is bonded in a 2-coordinate geometry to two Rb1+, one Cd2+, and one S6+ atom. In the twelfth O2- site, O2- is bonded in a distorted trigonal planar geometry to one Rb1+, one Cd2+, and one S6+ atom. In the thirteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Cd2+, and one S6+ atom. In the fourteenth O2- site, O2- is bonded in a 1-coordinate geometry to two Rb1+, one Cd2+, and one S6+ atom. In the fifteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Cd2+, and one S6+ atom. In the sixteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Rb1+, one S6+, and one O2- atom. The O–O bond length is 1.49 Å. In the seventeenth O2- site, O2- is bonded in a 4-coordinate geometry to two Rb1+, one Cd2+, and one O2- atom. In the eighteenth O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Cd2+, and one S6+ atom. In the nineteenth O2- site, O2- is bonded in a 3-coordinate geometry to one Rb1+, one Cd2+, and one S6+ atom. In the twentieth O2- site, O2- is bonded in a 4-coordinate geometry to two Rb1+, one Cd2+, and one O2- atom. In the twenty-first O2- site, O2- is bonded in a 2-coordinate geometry to two Rb1+, one Cd2+, and one S6+ atom. In the twenty-second O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Cd2+, and one S6+ atom. In the twenty-third O2- site, O2- is bonded in a distorted single-bond geometry to three Rb1+, one Cd2+, and one S6+ atom. In the twenty-fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Rb1+, one Cd2+, and one S6+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2021

Proteomic Profiling of the Substantia Nigra to Identify Determinants of Lewy Body Pathology and Dopaminergic Neuronal Loss

Proteinaceous aggregates containing ?-synuclein protein called Lewy bodies in the substantia nigra is a hallmark of Parkinson’s disease. The molecular mechanisms of Lewy body formation and associated neuronal loss remain largely unknown. To gain insights on proteins and pathways associated with Lewy body pathology, we performed quantitative profiling of the proteome. We analyzed substantia nigra tissue from 51 subjects arranged into three groups: cases with Lewy body pathology, Lewy body-negative controls with matching neuronal loss and controls with no neuronal loss. Using label-free LC-MS/MS approach we quantified the 2,963 most abundant proteins. Statistical testing for differential protein abundance, followed by pathway enrichment and Bayesian learning of the causal network structure were performed to identify likely drivers of Lewy body formation and dopaminergic neuronal loss. The identified pathways include (1) Arp2/3 complex-mediated actin nucleation; (2) synaptic function; (3) poly(A) RNA binding; (4) basement membrane and endothelium; and (5) hydrogen peroxide metabolic process. According to the data, the endothelial/basement membrane pathway is tightly connected with both pathologies and likely to be one of the drivers of the neuronal loss. The poly(A) RNA-binding proteins, including the ones relevant to other neurodegenerative disorders (e.g. TDP-43 and FUS) have strong inverse correlation with Lewy bodies and may reflect alternative mechanism of nigral neurodegeneration.

Petyuk, Vladislav A.↗
DOE OSTI2020

Materials Data on CdHg3C6S6(N3Cl)2 by Materials Project

Hg3CdCl2(SCN)6 crystallizes in the trigonal R3c space group. The structure is three-dimensional. there are two inequivalent Hg2+ sites. In the first Hg2+ site, Hg2+ is bonded in a 4-coordinate geometry to two S2- and two equivalent Cl1- atoms. There are one shorter (2.48 Å) and one longer (2.51 Å) Hg–S bond lengths. There are one shorter (2.73 Å) and one longer (2.85 Å) Hg–Cl bond lengths. In the second Hg2+ site, Hg2+ is bonded in a distorted rectangular see-saw-like geometry to two S2- and two Cl1- atoms. There are one shorter (2.48 Å) and one longer (2.50 Å) Hg–S bond lengths. There are one shorter (2.79 Å) and one longer (2.84 Å) Hg–Cl bond lengths. There are two inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded in an octahedral geometry to six N3- atoms. There are three shorter (2.35 Å) and three longer (2.37 Å) Cd–N bond lengths. In the second Cd2+ site, Cd2+ is bonded in an octahedral geometry to six N3- atoms. There are three shorter (2.35 Å) and three longer (2.38 Å) Cd–N bond lengths. There are four inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a linear geometry to one N3- and one S2- atom. The C–N bond length is 1.17 Å. The C–S bond length is 1.66 Å. In the second C4+ site, C4+ is bonded in a distorted linear geometry to one N3- and one S2- atom. The C–N bond length is 1.17 Å. The C–S bond length is 1.66 Å. In the third C4+ site, C4+ is bonded in a linear geometry to one N3- and one S2- atom. The C–N bond length is 1.17 Å. The C–S bond length is 1.66 Å. In the fourth C4+ site, C4+ is bonded in a distorted linear geometry to one N3- and one S2- atom. The C–N bond length is 1.18 Å. The C–S bond length is 1.65 Å. There are four inequivalent N3- sites. In the first N3- site, N3- is bonded in a linear geometry to one Cd2+ and one C4+ atom. In the second N3- site, N3- is bonded in a linear geometry to one Cd2+ and one C4+ atom. In the third N3- site, N3- is bonded in a linear geometry to one Cd2+ and one C4+ atom. In the fourth N3- site, N3- is bonded in a linear geometry to one Cd2+ and one C4+ atom. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted L-shaped geometry to one Hg2+ and one C4+ atom. In the second S2- site, S2- is bonded in a water-like geometry to one Hg2+ and one C4+ atom. In the third S2- site, S2- is bonded in a distorted water-like geometry to one Hg2+ and one C4+ atom. In the fourth S2- site, S2- is bonded in a water-like geometry to one Hg2+ and one C4+ atom. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a trigonal non-coplanar geometry to three equivalent Hg2+ atoms. In the second Cl1- site, Cl1- is bonded in a distorted trigonal planar geometry to three Hg2+ atoms.

36 MATERIALS SCIENCE↗
NASA NTRS1993

Preliminary results: Root cause investigation of orbital anomalies and failures in NASA standard 50 ampere-hour nickel-cadmium batteries

Two lots of NASA standard 50 A.H. Ni-Cd battery cells, manufactured by Gates Aerospace Batteries and built into batteries by McDonnell Douglas, have experienced significant performance problems. The two lots were used on the Compton Gamma Ray Observatory and the Upper Atmosphere Research Satellite. Both of these satellites are Low Earth Orbital (LEO) satellites containing batteries on a parallel bus charged to NASA standard V/T curves using a NASA standard power regulator. The following preliminary conclusions were reached: (1) several plate and cell parameters have migrated within their spec limits over the years (in some cases, from one extreme to the other); (2) several parametric relationships, not generally monitored and therefore not under specification control, have also migrated over the years; (3) many of these changes appear to have taken place as a natural consequence of changes in GE/GAB materials and processes; (4) several of these factors may be 'conspiring' to aggravate known cell failure mechanisms (factors such as heavier plate, less teflon and/or less-uniform teflon, and less electrolyte) but all are still in spec (where specs exist); (5) the weight of the evidence collected to characterize the anomalies and to characterize the negative electrode itself, strongly suggests that alterations to the structure, composition, uniformity, and efficiency of the negative electrode are at the heart of the battery performance problems currently being experienced; and (6) further investigation at all levels (plate, cell, battery, and system) continues to be warranted.

Toft, Mark R.↗
DOE OSTI2020

Materials Data on KCd2H8C10N15O4 by Materials Project

(K2Cd4C20H10(N6O)5)2H2H2O2(H2O)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional and consists of one hydrogen molecule, two water molecules, one water molecule, and one K2Cd4C20H10(N6O)5 framework. In the K2Cd4C20H10(N6O)5 framework, there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to eight N3- atoms. There are a spread of K–N bond distances ranging from 3.03–3.21 Å. In the second K1+ site, K1+ is bonded in a 8-coordinate geometry to eight N3- atoms. There are a spread of K–N bond distances ranging from 3.00–3.17 Å. There are four inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded in an octahedral geometry to five N3- and one O2- atom. There are a spread of Cd–N bond distances ranging from 2.25–2.43 Å. The Cd–O bond length is 2.47 Å. In the second Cd2+ site, Cd2+ is bonded in an octahedral geometry to five N3- and one O2- atom. There are a spread of Cd–N bond distances ranging from 2.22–2.50 Å. The Cd–O bond length is 2.30 Å. In the third Cd2+ site, Cd2+ is bonded in an octahedral geometry to five N3- and one O2- atom. There are a spread of Cd–N bond distances ranging from 2.30–2.43 Å. The Cd–O bond length is 2.31 Å. In the fourth Cd2+ site, Cd2+ is bonded in an octahedral geometry to five N3- and one O2- atom. There are a spread of Cd–N bond distances ranging from 2.23–2.48 Å. The Cd–O bond length is 2.39 Å. There are twenty inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.17 Å) and one longer (1.29 Å) C–N bond length. In the second C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. In the third C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. In the fourth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.30 Å) C–N bond length. In the fifth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. In the sixth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. In the seventh C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.19 Å) and one longer (1.29 Å) C–N bond length. In the eighth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. In the ninth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. In the tenth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. In the eleventh C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. In the twelfth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.30 Å) C–N bond length. In the thirteenth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. In the fourteenth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.30 Å) C–N bond length. In the fifteenth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.29 Å) C–N bond length. In the sixteenth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.30 Å) C–N bond length. In the seventeenth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.30 Å) C–N bond length. In the eighteenth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.30 Å) C–N bond length. In the nineteenth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.30 Å) C–N bond length. In the twentieth C4+ site, C4+ is bonded in a linear geometry to two N3- atoms. There is one shorter (1.18 Å) and one longer (1.30 Å) C–N bond length. There are thirty inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 120 degrees geometry to two C4+ atoms. In the second N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the third N3- site, N3- is bonded in a 2-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the fourth N3- site, N3- is bonded in a linear geometry to one Cd2+ and one C4+ atom. In the fifth N3- site, N3- is bonded in a linear geometry to one Cd2+ and one C4+ atom. In the sixth N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the seventh N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the eighth N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the ninth N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the tenth N3- site, N3- is bonded in a linear geometry to one Cd2+ and one C4+ atom. In the eleventh N3- site, N3- is bonded in a bent 120 degrees geometry to two C4+ atoms. In the twelfth N3- site, N3- is bonded in a distorted bent 120 degrees geometry to two C4+ atoms. In the thirteenth N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the fourteenth N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the fifteenth N3- site, N3- is bonded in a bent 120 degrees geometry to two C4+ atoms. In the sixteenth N3- site, N3- is bonded in a bent 120 degrees geometry to two C4+ atoms. In the seventeenth N3- site, N3- is bonded in a linear geometry to one Cd2+ and one C4+ atom. In the eighteenth N3- site, N3- is bonded in a bent 120 degrees geometry to two C4+ atoms. In the nineteenth N3- site, N3- is bonded in a bent 120 degrees geometry to two C4+ atoms. In the twentieth N3- site, N3- is bonded in a bent 120 degrees geometry to two C4+ atoms. In the twenty-first N3- site, N3- is bonded in a bent 120 degrees geometry to two C4+ atoms. In the twenty-second N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the twenty-third N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the twenty-fourth N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the twenty-fifth N3- site, N3- is bonded in a 3-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the twenty-sixth N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the twenty-seventh N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the twenty-eighth N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the twenty-ninth N3- site, N3- is bonded in a 1-coordinate geometry to one K1+, one Cd2+, and one C4+ atom. In the thirtieth N3- site, N3- is bonded in a bent 120 degrees geometry to two C4+ atoms. There are ten inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the third H1+ site, H1+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.01 Å) and one longer (1.53 Å) H–O bond length. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the fifth H1+ site, H1+ is bonded in a distorted single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.97 Å. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one Cd2+ and two H1+ atoms. In the second O2- site, O2- is bonded in a water-like geometry to one Cd2+ and two H1+ atoms. In the third O2- site, O2- is bonded in a distorted water-like geometry to one Cd2+ and two H1+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to three H1+ atoms. In the fifth O2- site, O2- is bonded in a water-like geometry to one Cd2+ and two H1+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on K2CdH4(SeO5)2 by Materials Project

K2CdH4(SeO5)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are two inequivalent K1+ sites. In the first K1+ site, K1+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of K–O bond distances ranging from 2.81–3.15 Å. In the second K1+ site, K1+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of K–O bond distances ranging from 2.79–2.93 Å. Cd2+ is bonded to six O2- atoms to form CdO6 octahedra that share corners with four SeO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.30–2.35 Å. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.00 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. There are two inequivalent Se6+ sites. In the first Se6+ site, Se6+ is bonded to four O2- atoms to form SeO4 tetrahedra that share corners with two equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 46–54°. There are a spread of Se–O bond distances ranging from 1.66–1.69 Å. In the second Se6+ site, Se6+ is bonded to four O2- atoms to form SeO4 tetrahedra that share corners with two equivalent CdO6 octahedra. The corner-sharing octahedra tilt angles range from 48–54°. There are a spread of Se–O bond distances ranging from 1.66–1.69 Å. There are ten inequivalent O2- sites. In the first O2- site, O2- is bonded in a 4-coordinate geometry to two K1+, one Cd2+, and one Se6+ atom. In the second O2- site, O2- is bonded in a water-like geometry to one K1+, one Cd2+, and two H1+ atoms. In the third O2- site, O2- is bonded in a distorted water-like geometry to one K1+, one Cd2+, and two H1+ atoms. In the fourth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one Se6+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+ and one Se6+ atom. In the sixth O2- site, O2- is bonded in a 3-coordinate geometry to one K1+, one Cd2+, and one Se6+ atom. In the seventh O2- site, O2- is bonded in a distorted tetrahedral geometry to two K1+, one Cd2+, and one Se6+ atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to two equivalent K1+ and one Se6+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one K1+ and one Se6+ atom. In the tenth O2- site, O2- is bonded in a 2-coordinate geometry to two equivalent K1+, one Cd2+, and one Se6+ atom.

36 MATERIALS SCIENCE↗
NASA NTRS2000

BOREAS TGB-7 Ambient Air Herbicide and Organochlorine Concentration Data

The BOReal Ecosystem-Atmosphere Study Trace Gas Biogeochemistry (BOREAS TGB)-7 team measured the concentration and flux of several agricultural pesticides in air, rainwater, and dry deposition samples in order to determine the associated yearly deposition rates. This data set contains information on the ambient air concentration of seven herbicides [2,4- dichlorophenoxyacidic_acid (2,4-D), bromoxynil, dicamb, 2-methyl-4-chlorophenoxyacetic acid (MCPA), triallate, trifluralin, and diclop-methyl] known to appear in the atmosphere of the Canadian prairies. Also, the concentration of three herbicides (atrazine, alachlor, and metolachlor), two groups of insecticides (lindane and breakdown products and dichloro-diphenyl-trichloroethane (DDT) and breakdown products), and several polychlorinated biphenyls commonly used in the central United States was measured. All of these chemicals are reported, in the literature, to be transported in the atmosphere. Many have been reported to occur in boreal and arctic food chains. The sampling was carried out from 16-Jun to 13-Aug-1993 and 04-May to 20-Jul-1994 at the BOREAS site in the Prince Albert National Park (Waskesiu). The data are stored in tabular ASCII files. The data files are available on a CD-ROM (see document number 20010000884).

Waite, Don↗
DOE OSTI2020

Materials Data on CdRe2(H2O5)2 by Materials Project

Re2Cd(H2O5)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are four inequivalent Re7+ sites. In the first Re7+ site, Re7+ is bonded in a 4-coordinate geometry to five O2- atoms. There are a spread of Re–O bond distances ranging from 1.74–2.42 Å. In the second Re7+ site, Re7+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Re–O bond distances ranging from 1.74–2.49 Å. In the third Re7+ site, Re7+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Re–O bond distances ranging from 1.75–1.77 Å. In the fourth Re7+ site, Re7+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Re–O bond distances ranging from 1.74–1.77 Å. There are two inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of Cd–O bond distances ranging from 2.07–2.92 Å. In the second Cd2+ site, Cd2+ is bonded in a 7-coordinate geometry to seven O2- atoms. There are a spread of Cd–O bond distances ranging from 2.27–2.69 Å. There are eight inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 1.01 Å. There are twenty inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Re7+ and one Cd2+ atom. In the second O2- site, O2- is bonded in a distorted single-bond geometry to two Re7+ atoms. In the third O2- site, O2- is bonded in a water-like geometry to two Re7+ atoms. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one Cd2+ atom. In the sixth O2- site, O2- is bonded in a single-bond geometry to one Re7+ and one Cd2+ atom. In the seventh O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to one Re7+ and one H1+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Re7+ and one Cd2+ atom. In the tenth O2- site, O2- is bonded in a distorted single-bond geometry to one Re7+ and one Cd2+ atom. In the eleventh O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the twelfth O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the thirteenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Re7+ and one Cd2+ atom. In the fourteenth O2- site, O2- is bonded in a bent 150 degrees geometry to one Re7+ and one Cd2+ atom. In the fifteenth O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the sixteenth O2- site, O2- is bonded in a single-bond geometry to one Re7+ atom. In the seventeenth O2- site, O2- is bonded in a distorted water-like geometry to two Cd2+ and two H1+ atoms. In the eighteenth O2- site, O2- is bonded in a water-like geometry to two Cd2+ and two H1+ atoms. In the nineteenth O2- site, O2- is bonded in a distorted single-bond geometry to one Re7+, one Cd2+, and one H1+ atom. In the twentieth O2- site, O2- is bonded in a water-like geometry to one Re7+, one Cd2+, and two H1+ atoms.

36 MATERIALS SCIENCE↗
NASA NTRS2013

Modelling of Equilibrium Between Mantle and Core: Refractory, Volatile, and Highly Siderophile Elements

Siderophile elements have been used to constrain conditions of core formation and differentiation for the Earth, Mars and other differentiated bodies [1]. Recent models for the Earth have concluded that the mantle and core did not fully equilibrate and the siderophile element contents of the mantle can only be explained under conditions where the oxygen fugacity changes from low to high during accretion and the mantle and core do not fully equilibrate [2,3]. However these conclusions go against several physical and chemical constraints. First, calculations suggest that even with the composition of accreting material changing from reduced to oxidized over time, the fO2 defined by metal-silicate equilibrium does not change substantially, only by approximately 1 logfO2 unit [4]. An increase of more than 2 logfO2 units in mantle oxidation are required in models of [2,3]. Secondly, calculations also show that metallic impacting material will become deformed and sheared during accretion to a large body, such that it becomes emulsified to a fine scale that allows equilibrium at nearly all conditions except for possibly the length scale for giant impacts [5] (contrary to conclusions of [6]). Using new data for D(Mo) metal/silicate at high pressures, together with updated partitioning expressions for many other elements, we will show that metal-silicate equilibrium across a long span of Earth s accretion history may explain the concentrations of many siderophile elements in Earth's mantle. The modeling includes refractory elements Ni, Co, Mo, and W, as well as highly siderophile elements Au, Pd and Pt, and volatile elements Cd, In, Bi, Sb, Ge and As.

Righter, K.↗