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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on Cd8Ag5 by Materials Project

Ag5Cd8 is gamma-brass structured and crystallizes in the cubic I-43m space group. The structure is three-dimensional. there are two inequivalent Ag sites. In the first Ag site, Ag is bonded in a 4-coordinate geometry to three Ag and ten Cd atoms. There are one shorter (2.90 Å) and two longer (3.11 Å) Ag–Ag bond lengths. There are a spread of Ag–Cd bond distances ranging from 2.91–3.25 Å. In the second Ag site, Ag is bonded in a 12-coordinate geometry to three equivalent Ag and nine Cd atoms. There are a spread of Ag–Cd bond distances ranging from 2.93–3.01 Å. There are two inequivalent Cd sites. In the first Cd site, Cd is bonded in a 11-coordinate geometry to six Ag and five Cd atoms. There are one shorter (3.02 Å) and four longer (3.03 Å) Cd–Cd bond lengths. In the second Cd site, Cd is bonded in a 12-coordinate geometry to six Ag and six Cd atoms. All Cd–Cd bond lengths are 3.13 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cd5(S2Cl)2 by Materials Project

Cd5(S2Cl)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. there are five inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded in a 4-coordinate geometry to four S2- atoms. All Cd–S bond lengths are 2.58 Å. In the second Cd2+ site, Cd2+ is bonded to four S2- atoms to form distorted CdS4 trigonal pyramids that share corners with four CdS2Cl2 trigonal pyramids and edges with two equivalent CdS4 trigonal pyramids. There are a spread of Cd–S bond distances ranging from 2.50–2.70 Å. In the third Cd2+ site, Cd2+ is bonded to four S2- atoms to form distorted CdS4 trigonal pyramids that share corners with four CdS2Cl2 trigonal pyramids and edges with two equivalent CdS4 trigonal pyramids. There are a spread of Cd–S bond distances ranging from 2.50–2.70 Å. In the fourth Cd2+ site, Cd2+ is bonded to two S2- and two equivalent Cl1- atoms to form CdS2Cl2 trigonal pyramids that share corners with four CdS4 trigonal pyramids and an edgeedge with one CdS2Cl2 trigonal pyramid. Both Cd–S bond lengths are 2.50 Å. There are one shorter (2.60 Å) and one longer (2.64 Å) Cd–Cl bond lengths. In the fifth Cd2+ site, Cd2+ is bonded to two S2- and two equivalent Cl1- atoms to form CdS2Cl2 trigonal pyramids that share corners with four CdS4 trigonal pyramids and an edgeedge with one CdS2Cl2 trigonal pyramid. Both Cd–S bond lengths are 2.50 Å. There are one shorter (2.60 Å) and one longer (2.64 Å) Cd–Cl bond lengths. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted see-saw-like geometry to four Cd2+ atoms. In the second S2- site, S2- is bonded in a distorted see-saw-like geometry to four Cd2+ atoms. In the third S2- site, S2- is bonded in a distorted see-saw-like geometry to four Cd2+ atoms. In the fourth S2- site, S2- is bonded in a distorted see-saw-like geometry to four Cd2+ atoms. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in an L-shaped geometry to two equivalent Cd2+ atoms. In the second Cl1- site, Cl1- is bonded in an L-shaped geometry to two equivalent Cd2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CdC7S3N4 by Materials Project

CCd(SCN)3C3N crystallizes in the orthorhombic Pna2_1 space group. The structure is one-dimensional and consists of four 1-azatricyclo[1.1.0.0^{2,4}]butane molecules; four methane molecules; and two Cd(SCN)3 ribbons oriented in the (0, 1, 0) direction. In each Cd(SCN)3 ribbon, Cd2+ is bonded in a distorted octahedral geometry to three N3- and three S2- atoms. There are a spread of Cd–N bond distances ranging from 2.26–2.31 Å. There are a spread of Cd–S bond distances ranging from 2.79–2.83 Å. There are three inequivalent C+2.29+ sites. In the first C+2.29+ site, C+2.29+ 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 1.63 Å. In the second C+2.29+ site, C+2.29+ 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 1.63 Å. In the third C+2.29+ site, C+2.29+ 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 1.63 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a bent 150 degrees geometry to one Cd2+ and one C+2.29+ atom. In the second N3- site, N3- is bonded in a bent 150 degrees geometry to one Cd2+ and one C+2.29+ atom. In the third N3- site, N3- is bonded in a bent 150 degrees geometry to one Cd2+ and one C+2.29+ atom. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in an L-shaped geometry to one Cd2+ and one C+2.29+ atom. In the second S2- site, S2- is bonded in a water-like geometry to one Cd2+ and one C+2.29+ atom. In the third S2- site, S2- is bonded in a distorted water-like geometry to one Cd2+ and one C+2.29+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2025

Data from: Short-Term Inhibition and Long-Term Enhancement of IrreversibleTrace Metal Binding to Goethite in Multi-Metal Systems

These files include the data used in all figures from the following paper: Short-Term Inhibition and Long-Term Enhancement of Irreversible Trace Metal Binding to Goethite in Multi-Metal Systems Below is a brief description of each of the figures and associated data. Fig 1. Ni adsorption isotherms to goethite in the presence and absence of Zn and Cd Fig 2. % of Ni, Zn, and Cd exchanged as a function of time in isotope exchange experiments conducted after 2 days, 30 days, and 60 days aging. Fig. 3. This shows the % of Ni, Cd, and Zn in single metal and mixed metal systems that is non-exchangeable, both in units of % non-exchangeable and in micromoles of metal per gram of goethite. Fig. 4. Particle size distributions of Ni-Zn and Ni-Cd systems after aging. Fig 5. Ni and Zn XANES fits for Ni-Cd and Ni-Zn systems after 30 and 60 days aging. Linear combination fits were performed between freshly adsorbed and incorporated phases (synthesized as Ni- or Zn-substituted goethite) to determine the proportions of each. Figure S1. Dissolved Metal Concentrations at the Start of Isotope Exchange Figure S2. Reactor pH with Aging Figure S3. Dissolved Cd and Ni Concentrations during Isotope Exchange Figure S4. Dissolved Zn and Ni Concentrations during Isotope Exchange Figure S5. Tracer Mole Fractions in Ni-Zn Isotope Exchange Experiments Figure S6. Tracer Mole Fractions in Ni-Cd Isotope Exchange Experiments

58 GEOSCIENCES↗
DOE OSTI2020

Materials Data on CaCd(NO3)4 by Materials Project

CaCd(NO3)4 crystallizes in the trigonal P3_121 space group. The structure is three-dimensional. Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.39–2.57 Å. Cd2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Cd–O bond distances ranging from 2.39–2.68 Å. There are two inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.22 Å) and one longer (1.29 Å) N–O bond length. In the second N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.24–1.32 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted single-bond geometry to one Ca2+ atom. In the second O2- site, O2- is bonded in a distorted T-shaped geometry to one Ca2+, one Cd2+, and one N5+ atom. In the third O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Cd2+, and one N5+ atom. In the fourth O2- site, O2- is bonded in a distorted L-shaped geometry to one Cd2+ and one N5+ atom. In the fifth O2- site, O2- is bonded in a distorted single-bond geometry to one Ca2+ and one N5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Cd2+ and one N5+ atom.

36 MATERIALS SCIENCE↗
NASA NTRS2000

Direct Visualization of an Impurity Depletion Zone

When a crystal incorporates more impurity per unit of its volume than the impurity concentration in solution, the solution in vicinity of the growing crystal is depleted with respect to the impurity I,2. With a stagnant solution, e. g. in microgravity or gels, an impurity depletion zone expands as the crystal grows and results in greater purity in most of the outer portion of the crystal than in the core. Crystallization in gel provides an opportunity to mimic microgravity conditions and visualize the impurity depletion zone. Colorless, transparent apoferritin (M congruent to 450 KDa) crystals were grown in the presence of red holoferritin dimer as a microheterogeneous impurity (M congruent to 900 KDa) within agarose gel by counterdiffusion with Cd(2+) precipitant. Preferential trapping of dimers, (distribution coefficient K = 4 (exp 1,2)) results in weaker red color around the crystals grown in the left tube in the figure as compared to the control middle tube without crystals. The left and the middle tubes contain colored ferritin dimers, the right tube contains colored trimers. The meniscus in the left tube separate gel (below) and liquid solution containing Cd(2+) (above). Similar solutions, though without precipitants, were present on top of the middle and right tube allowing diffusion of dimers and trimers. The area of weaker color intensity around crystals directly demonstrates overlapped impurity depletion zones.

Chernov, Alex A.↗
DOE OSTI2020

Materials Data on BaCd(ClO)4 by Materials Project

BaCd(OCl)4 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. Ba is bonded in a 8-coordinate geometry to two O and six Cl atoms. There are one shorter (3.36 Å) and one longer (3.40 Å) Ba–O bond lengths. There are a spread of Ba–Cl bond distances ranging from 3.05–3.78 Å. Cd is bonded to six Cl atoms to form edge-sharing CdCl6 octahedra. There are a spread of Cd–Cl bond distances ranging from 2.65–2.73 Å. There are four inequivalent O sites. In the first O site, O is bonded in a bent 150 degrees geometry to one Ba and one O atom. The O–O bond length is 1.23 Å. In the second O site, O is bonded in a single-bond geometry to one O atom. In the third O site, O is bonded in a bent 150 degrees geometry to one Ba and one O atom. The O–O bond length is 1.23 Å. In the fourth O site, O is bonded in a single-bond geometry to one O atom. There are four inequivalent Cl sites. In the first Cl site, Cl is bonded in a distorted trigonal non-coplanar geometry to one Ba and two equivalent Cd atoms. In the second Cl site, Cl is bonded in a distorted trigonal non-coplanar geometry to one Ba and two equivalent Cd atoms. In the third Cl site, Cl is bonded in a distorted water-like geometry to two equivalent Ba and one Cd atom. In the fourth Cl site, Cl is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ba and one Cd atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CaCd(NO3)4 by Materials Project

CaCd(NO3)4 crystallizes in the trigonal P3_2 space group. The structure is three-dimensional. Ca2+ is bonded in a 8-coordinate geometry to eight O2- atoms. There are a spread of Ca–O bond distances ranging from 2.43–2.54 Å. Cd2+ is bonded in a distorted hexagonal bipyramidal geometry to eight O2- atoms. There are a spread of Cd–O bond distances ranging from 2.42–2.65 Å. There are four inequivalent N5+ sites. In the first N5+ site, N5+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.22 Å) and one longer (1.29 Å) N–O bond length. In the second N5+ site, N5+ is bonded in a bent 120 degrees geometry to two O2- atoms. There is one shorter (1.22 Å) and one longer (1.29 Å) N–O bond length. In the third N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.25–1.31 Å. In the fourth N5+ site, N5+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of N–O bond distances ranging from 1.25–1.31 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted L-shaped geometry to one Cd2+ and one N5+ atom. In the second O2- site, O2- is bonded in a distorted T-shaped geometry to one Ca2+, one Cd2+, and one N5+ atom. In the third O2- site, O2- is bonded in a distorted T-shaped geometry to one Ca2+, one Cd2+, and one N5+ atom. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Ca2+ atom. In the fifth O2- site, O2- is bonded in a single-bond geometry to one Ca2+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Ca2+ and one N5+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Cd2+ and one N5+ atom. In the eighth O2- site, O2- is bonded in a distorted single-bond geometry to one Ca2+ and one N5+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to one Cd2+ and one N5+ atom. In the tenth O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Cd2+, and one N5+ atom. In the eleventh O2- site, O2- is bonded in a 3-coordinate geometry to one Ca2+, one Cd2+, and one N5+ atom. In the twelfth O2- site, O2- is bonded in a distorted L-shaped geometry to one Cd2+ and one N5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Mg30AlCdO32 by Materials Project

Mg30CdAlO32 is Molybdenum Carbide MAX Phase-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. there are eight inequivalent Mg sites. In the first Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with two equivalent AlO6 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 2.10–2.23 Å. In the second Mg site, Mg is bonded to six O 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 1.99–2.19 Å. In the third Mg site, Mg is bonded to six O atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are two shorter (2.13 Å) and four longer (2.16 Å) Mg–O bond lengths. In the fourth Mg site, Mg is bonded to six O 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 (2.15 Å) Mg–O bond lengths. In the fifth Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one CdO6 octahedra, an edgeedge with one AlO6 octahedra, and edges with ten MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–15°. There are a spread of Mg–O bond distances ranging from 2.12–2.19 Å. In the sixth Mg site, Mg is bonded to six O atoms to form a mixture of edge and corner-sharing MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–3°. There are two shorter (2.14 Å) and four longer (2.15 Å) Mg–O bond lengths. In the seventh Mg site, Mg is bonded to six O atoms to form MgO6 octahedra that share corners with six MgO6 octahedra, an edgeedge with one AlO6 octahedra, and edges with eleven MgO6 octahedra. The corner-sharing octahedra tilt angles range from 1–5°. There are four shorter (2.14 Å) and two longer (2.15 Å) Mg–O bond lengths. In the eighth Mg site, Mg is bonded to six O 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 2.13–2.17 Å. Cd is bonded to six O atoms to form CdO6 octahedra that share corners with two equivalent AlO6 octahedra, corners with four equivalent MgO6 octahedra, and edges with twelve MgO6 octahedra. The corner-sharing octahedral tilt angles are 0°. There are four shorter (2.30 Å) and two longer (2.43 Å) Cd–O bond lengths. Al is bonded to six O atoms to form AlO6 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 is two shorter (1.86 Å) and four longer (2.06 Å) Al–O bond length. There are fourteen inequivalent O sites. In the first O site, O is bonded to five Mg and one Al atom to form OMg5Al octahedra that share corners with six OMg5Al octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are two shorter (2.14 Å) and one longer (2.23 Å) O–Mg bond lengths. In the second O site, O is bonded to five Mg and one Cd atom to form OMg5Cd octahedra that share corners with six OMg5Al octahedra and edges with twelve OMg5Cd octahedra. The corner-sharing octahedra tilt angles range from 0–4°. In the third O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with six OMg5Al octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. Both O–Mg bond lengths are 2.15 Å. In the fourth O site, O is bonded to six Mg 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 O site, O is bonded to five Mg and one Cd atom to form OMg5Cd octahedra that share corners with six OMg5Al octahedra and edges with twelve OMg5Cd octahedra. The corner-sharing octahedra tilt angles range from 0–4°. There are two shorter (2.15 Å) and two longer (2.17 Å) O–Mg bond lengths. In the sixth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with six OMg5Al octahedra and edges with twelve OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are two shorter (2.14 Å) and two longer (2.15 Å) O–Mg bond lengths. In the seventh O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with six equivalent OMg6 octahedra and edges with twelve OMg5Al octahedra. The corner-sharing octahedra tilt angles range from 1–2°. In the eighth O site, O is bonded to four equivalent Mg, one Cd, and one Al atom to form distorted OMg4AlCd octahedra that share corners with six OMg4AlCd octahedra and edges with twelve OMg5Al octahedra. The corner-sharing octahedra tilt angles range from 0–9°. In the ninth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with six OMg4AlCd octahedra and edges with twelve OMg5Cd octahedra. The corner-sharing octahedra tilt angles range from 0–9°. In the tenth O site, O is bonded to six Mg atoms to form OMg6 octahedra that share corners with six OMg4AlCd octahedra and edges with twelve OMg5Cd octahedra. The corner-sharing octahedra tilt angles range from 0–9°. There are two shorter (2.12 Å) and two longer (2.15 Å) O–Mg bond lengths. In the eleventh O site, O is bonded to six Mg atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–2°. In the twelfth O site, O is bonded to five Mg and one Al atom to form a mixture of edge and corner-sharing OMg5Al octahedra. The corner-sharing octahedra tilt angles range from 0–3°. In the thirteenth O site, O is bonded to six Mg atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. The O–Mg bond length is 2.13 Å. In the fourteenth O site, O is bonded to six Mg atoms to form a mixture of edge and corner-sharing OMg6 octahedra. The corner-sharing octahedra tilt angles range from 0–3°. There are a spread of O–Mg bond distances ranging from 2.13–2.15 Å.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Cd3P2 by Materials Project

Cd3P2 is Hausmannite-like structured and crystallizes in the tetragonal P4_2/nmc space group. The structure is three-dimensional. there are three inequivalent Cd2+ sites. In the first Cd2+ site, Cd2+ is bonded in a 4-coordinate geometry to four P3- atoms. There are a spread of Cd–P bond distances ranging from 2.57–3.11 Å. In the second Cd2+ site, Cd2+ is bonded to four P3- atoms to form a mixture of edge and corner-sharing CdP4 tetrahedra. There are two shorter (2.54 Å) and two longer (2.86 Å) Cd–P bond lengths. In the third Cd2+ site, Cd2+ is bonded to four P3- atoms to form a mixture of distorted edge and corner-sharing CdP4 tetrahedra. There are a spread of Cd–P bond distances ranging from 2.60–3.08 Å. There are three inequivalent P3- sites. In the first P3- site, P3- is bonded in a 6-coordinate geometry to six Cd2+ atoms. In the second P3- site, P3- is bonded in a 6-coordinate geometry to six Cd2+ atoms. In the third P3- site, P3- is bonded in a 4-coordinate geometry to six Cd2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on BaCd(PO3)4 by Materials Project

BaCd(PO3)4 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Ba2+ is bonded in a 9-coordinate geometry to nine O2- atoms. There are a spread of Ba–O bond distances ranging from 2.72–3.11 Å. Cd2+ is bonded to six O2- atoms to form distorted CdO6 pentagonal pyramids that share corners with six PO4 tetrahedra. There are a spread of Cd–O bond distances ranging from 2.30–2.37 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CdO6 pentagonal pyramid and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.49–1.63 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one CdO6 pentagonal pyramid and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.50–1.61 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent CdO6 pentagonal pyramids and corners with two PO4 tetrahedra. There is two shorter (1.50 Å) and two longer (1.61 Å) P–O bond length. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent CdO6 pentagonal pyramids and corners with two PO4 tetrahedra. There are a spread of P–O bond distances ranging from 1.51–1.61 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Cd2+, and one P5+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two P5+ atoms. In the fourth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Cd2+, and one P5+ atom. In the fifth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Cd2+, and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+, one Cd2+, and one P5+ atom. In the eighth O2- site, O2- is bonded in a 1-coordinate geometry to one Ba2+, one Cd2+, and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted single-bond geometry to two equivalent Ba2+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P5+ atoms. In the eleventh O2- site, O2- is bonded in a distorted single-bond geometry to one Ba2+, one Cd2+, and one P5+ atom. In the twelfth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two P5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2023

Access and Capture of Layered Double Perovskite Polytypic Phase through High-Pressure Engineering

Engineering halide perovskites through external pressure is as an effective means to tune the crystal structure, thus optoelectronic properties of the material. In this work, we studied the structural and optical property evolutions of Cs 4 M II Bi 2 Cl 12 (M II : Cd, Cd 0.8 Mn 0.2 , Mn) layered double perovskite (LDP) crystalline powders under high pressure. A novel polytypic phase transition was observed featuring lateral interlayer sliding of the Bi–M II –Bi trilayer units, resulting in a new LDP-12R phase. Importantly, this high-pressure induced LDP-12R crystal phase can be preserved after complete decompression and captured at ambient conditions. Moreover, the LDP samples showed a pressure-dependent photoluminescence property. Finally, our findings exemplified a new perovskite polytype that can be accessed and captured through high-pressure processing, advocating the uniqueness of LDP materials with soft and transformable crystal lattices.

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
DOE OSTI2020

Materials Data on Ta2CdBi by Materials Project

Ta2CdBi crystallizes in the cubic F-43m space group. The structure is three-dimensional. there are two inequivalent Ta sites. In the first Ta site, Ta is bonded in a 4-coordinate geometry to four equivalent Ta, four equivalent Cd, and six equivalent Bi atoms. All Ta–Ta bond lengths are 3.04 Å. All Ta–Cd bond lengths are 3.04 Å. All Ta–Bi bond lengths are 3.51 Å. In the second Ta site, Ta is bonded to four equivalent Ta and four equivalent Bi atoms to form distorted edge-sharing TaTa4Bi4 tetrahedra. All Ta–Bi bond lengths are 3.04 Å. Cd is bonded in a distorted body-centered cubic geometry to four equivalent Ta and four equivalent Bi atoms. All Cd–Bi bond lengths are 3.04 Å. Bi is bonded in a distorted body-centered cubic geometry to ten Ta and four equivalent Cd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CdPd5Se by Materials Project

Pd5CdSe crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. there are two inequivalent Pd sites. In the first Pd site, Pd is bonded in a 4-coordinate geometry to two equivalent Pd, two equivalent Cd, and two equivalent Se atoms. Both Pd–Pd bond lengths are 2.88 Å. Both Pd–Cd bond lengths are 2.88 Å. Both Pd–Se bond lengths are 2.55 Å. In the second Pd site, Pd is bonded to eight equivalent Pd and four equivalent Cd atoms to form distorted PdCd4Pd8 cuboctahedra that share corners with four equivalent PdCd4Pd8 cuboctahedra, faces with four equivalent PdCd4Pd8 cuboctahedra, and faces with four equivalent CdPd12 cuboctahedra. All Pd–Cd bond lengths are 2.88 Å. Cd is bonded to twelve Pd atoms to form CdPd12 cuboctahedra that share corners with four equivalent CdPd12 cuboctahedra, faces with four equivalent PdCd4Pd8 cuboctahedra, and faces with four equivalent CdPd12 cuboctahedra. Se is bonded in a body-centered cubic geometry to eight equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Yb20(CdAu3)3 by Materials Project

Yb20(Au3Cd)3 crystallizes in the tetragonal P422 space group. The structure is three-dimensional. there are four inequivalent Yb sites. In the first Yb site, Yb is bonded in a 4-coordinate geometry to four equivalent Au and two Cd atoms. All Yb–Au bond lengths are 3.11 Å. There are one shorter (3.49 Å) and one longer (3.58 Å) Yb–Cd bond lengths. In the second Yb site, Yb is bonded in a 6-coordinate geometry to five Au and one Cd atom. There are four shorter (3.12 Å) and one longer (3.51 Å) Yb–Au bond lengths. The Yb–Cd bond length is 3.56 Å. In the third Yb site, Yb is bonded in a 5-coordinate geometry to four Au and one Cd atom. There are a spread of Yb–Au bond distances ranging from 3.01–3.29 Å. The Yb–Cd bond length is 3.42 Å. In the fourth Yb site, Yb is bonded in a 5-coordinate geometry to three equivalent Au and two Cd atoms. There are a spread of Yb–Au bond distances ranging from 3.01–3.10 Å. There are one shorter (3.38 Å) and one longer (3.39 Å) Yb–Cd bond lengths. There are two inequivalent Au sites. In the first Au site, Au is bonded in a 8-coordinate geometry to eight Yb atoms. In the second Au site, Au is bonded in a 10-coordinate geometry to ten Yb atoms. There are three inequivalent Cd sites. In the first Cd site, Cd is bonded in a 10-coordinate geometry to ten Yb atoms. In the second Cd site, Cd is bonded in a distorted q6 geometry to ten Yb atoms. In the third Cd site, Cd is bonded in a 10-coordinate geometry to ten Yb atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on CdC4S2(NO)4 by Materials Project

CdC4S2(NO)4 crystallizes in the orthorhombic P2_12_12 space group. The structure is one-dimensional and consists of two CdC4S2(NO)4 ribbons oriented in the (1, 0, 0) direction. Cd2+ is bonded to four equivalent S2- and two equivalent O2- atoms to form edge-sharing CdS4O2 octahedra. There are two shorter (2.67 Å) and two longer (2.73 Å) Cd–S bond lengths. Both Cd–O bond lengths are 2.66 Å. There are two inequivalent C4+ sites. In the first C4+ site, C4+ is bonded in a 2-coordinate geometry to two N+1.50- and one S2- atom. Both C–N bond lengths are 1.32 Å. The C–S bond length is 1.71 Å. In the second C4+ site, C4+ is bonded in a linear geometry to two O2- atoms. There is one shorter (1.17 Å) and one longer (1.18 Å) C–O bond length. There are two inequivalent N+1.50- sites. In the first N+1.50- site, N+1.50- is bonded in a single-bond geometry to one C4+ atom. In the second N+1.50- site, N+1.50- is bonded in a distorted single-bond geometry to one C4+ atom. S2- is bonded in a 3-coordinate geometry to two equivalent Cd2+ and one C4+ atom. There are two inequivalent O2- sites. In the first O2- site, O2- is bonded in a 1-coordinate geometry to one Cd2+ and one C4+ atom. In the second O2- site, O2- is bonded in a single-bond geometry to one C4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ba6CdAg2(SnS4)4 by Materials Project

Ba6Ag2CdSn4S16 crystallizes in the tetragonal I-42d space group. The structure is three-dimensional. there are three inequivalent Ba2+ sites. In the first Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Ba–S bond distances ranging from 3.19–3.59 Å. In the second Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Ba–S bond distances ranging from 3.18–3.57 Å. In the third Ba2+ site, Ba2+ is bonded in a 8-coordinate geometry to eight S2- atoms. There are a spread of Ba–S bond distances ranging from 3.19–3.57 Å. Ag1+ is bonded to four S2- atoms to form distorted AgS4 trigonal pyramids that share corners with four equivalent SnS4 tetrahedra. There are two shorter (2.61 Å) and two longer (2.63 Å) Ag–S bond lengths. Cd2+ is bonded to four equivalent S2- atoms to form distorted CdS4 trigonal pyramids that share corners with four equivalent SnS4 tetrahedra. All Cd–S bond lengths are 2.59 Å. Sn4+ is bonded to four S2- atoms to form SnS4 tetrahedra that share a cornercorner with one CdS4 trigonal pyramid and corners with two equivalent AgS4 trigonal pyramids. There are a spread of Sn–S bond distances ranging from 2.38–2.47 Å. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded to three Ba2+ and one Sn4+ atom to form corner-sharing SBa3Sn tetrahedra. In the second S2- site, S2- is bonded in a 5-coordinate geometry to three Ba2+, one Ag1+, and one Sn4+ atom. In the third S2- site, S2- is bonded in a 5-coordinate geometry to three Ba2+, one Cd2+, and one Sn4+ atom. In the fourth S2- site, S2- is bonded in a 5-coordinate geometry to three Ba2+, one Ag1+, and one Sn4+ atom.

36 MATERIALS SCIENCE↗