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At least 451 records · Page 25
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DOE OSTI2020

Materials Data on ZnCuAu2 by Materials Project

Au2CuZn is alpha iridium vanadium-derived structured and crystallizes in the monoclinic P2/m space group. The structure is three-dimensional. there are two inequivalent Au sites. In the first Au site, Au is bonded in a distorted body-centered cubic geometry to six equivalent Cu and two equivalent Zn atoms. There are two shorter (2.74 Å) and four longer (2.75 Å) Au–Cu bond lengths. Both Au–Zn bond lengths are 2.73 Å. In the second Au site, Au is bonded in a distorted body-centered cubic geometry to two equivalent Cu and six equivalent Zn atoms. Both Au–Cu bond lengths are 2.73 Å. There are a spread of Au–Zn bond distances ranging from 2.75–2.80 Å. Cu is bonded in a 8-coordinate geometry to eight Au atoms. Zn is bonded in a distorted body-centered cubic geometry to eight Au atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on In12Ga4Ir2O15 by Materials Project

(Ir)2InIn11Ga4O15 crystallizes in the orthorhombic Pnn2 space group. The structure is three-dimensional and consists of two indium, elemental molecules; four iridium atom molecules; and one In11Ga4O15 framework. In the In11Ga4O15 framework, there are six inequivalent In1+ sites. In the first In1+ site, In1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of In–O bond distances ranging from 2.23–2.45 Å. In the second In1+ site, In1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of In–O bond distances ranging from 2.18–2.40 Å. In the third In1+ site, In1+ is bonded in a 4-coordinate geometry to four O2- atoms. There are a spread of In–O bond distances ranging from 2.12–2.42 Å. In the fourth In1+ site, In1+ is bonded in a 3-coordinate geometry to three O2- atoms. There are a spread of In–O bond distances ranging from 2.13–2.31 Å. In the fifth In1+ site, In1+ is bonded in a 3-coordinate geometry to three O2- atoms. There are one shorter (2.14 Å) and two longer (2.23 Å) In–O bond lengths. In the sixth In1+ site, In1+ is bonded in a distorted L-shaped geometry to two equivalent O2- atoms. Both In–O bond lengths are 2.97 Å. There are two inequivalent Ga3+ sites. In the first Ga3+ site, Ga3+ is bonded in a tetrahedral geometry to four O2- atoms. There are a spread of Ga–O bond distances ranging from 1.86–1.94 Å. In the second Ga3+ site, Ga3+ is bonded to four O2- atoms to form distorted corner-sharing GaO4 tetrahedra. There are a spread of Ga–O bond distances ranging from 1.83–1.90 Å. There are eight inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent Ga3+ atoms. In the second O2- site, O2- is bonded in a 4-coordinate geometry to three In1+ and one Ga3+ atom. In the third O2- site, O2- is bonded to three In1+ and one Ga3+ atom to form corner-sharing OIn3Ga tetrahedra. In the fourth O2- site, O2- is bonded to three In1+ and one Ga3+ atom to form corner-sharing OIn3Ga tetrahedra. In the fifth O2- site, O2- is bonded in a 3-coordinate geometry to two In1+ and one Ga3+ atom. In the sixth O2- site, O2- is bonded in a 4-coordinate geometry to three In1+ and one Ga3+ atom. In the seventh O2- site, O2- is bonded in a trigonal non-coplanar geometry to three In1+ and one Ga3+ atom. In the eighth O2- site, O2- is bonded in a trigonal non-coplanar geometry to two In1+ and one Ga3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfInPd2 by Materials Project

Pd2HfIn is alpha iridium vanadium-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Hf is bonded in a distorted body-centered cubic geometry to eight equivalent Pd atoms. All Hf–Pd bond lengths are 2.81 Å. Pd is bonded in a distorted body-centered cubic geometry to four equivalent Hf and four equivalent In atoms. All Pd–In bond lengths are 2.98 Å. In is bonded in a 8-coordinate geometry to eight equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TiNi by Materials Project

NiTi is alpha iridium vanadium-like structured and crystallizes in the tetragonal I4/mmm space group. The structure is three-dimensional. there are nine inequivalent Ti sites. In the first Ti site, Ti is bonded in a 8-coordinate geometry to one Ti and eight equivalent Ni atoms. The Ti–Ti bond length is 2.63 Å. There are four shorter (2.55 Å) and four longer (2.65 Å) Ti–Ni bond lengths. In the second Ti site, Ti is bonded in a distorted body-centered cubic geometry to eight equivalent Ni atoms. All Ti–Ni bond lengths are 2.59 Å. In the third Ti site, Ti is bonded in a distorted body-centered cubic geometry to eight equivalent Ni atoms. All Ti–Ni bond lengths are 2.65 Å. In the fourth Ti site, Ti is bonded in a 10-coordinate geometry to two Ti and eight equivalent Ni atoms. The Ti–Ti bond length is 2.63 Å. All Ti–Ni bond lengths are 2.83 Å. In the fifth Ti site, Ti is bonded in a body-centered cubic geometry to eight equivalent Ni atoms. All Ti–Ni bond lengths are 2.46 Å. In the sixth Ti site, Ti is bonded in a 8-coordinate geometry to one Ti and eight equivalent Ni atoms. The Ti–Ti bond length is 2.63 Å. There are four shorter (2.55 Å) and four longer (2.65 Å) Ti–Ni bond lengths. In the seventh Ti site, Ti is bonded in a distorted body-centered cubic geometry to eight equivalent Ni atoms. All Ti–Ni bond lengths are 2.59 Å. In the eighth Ti site, Ti is bonded in a 10-coordinate geometry to two Ti and eight equivalent Ni atoms. The Ti–Ti bond length is 2.63 Å. All Ti–Ni bond lengths are 2.83 Å. In the ninth Ti site, Ti is bonded in a body-centered cubic geometry to eight equivalent Ni atoms. All Ti–Ni bond lengths are 2.46 Å. Ni is bonded in a 8-coordinate geometry to eight Ti atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Te7IrBr7 by Materials Project

IrTe(TeBr)3Te3Br4 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two iridium molecules, two tellurium molecules, two Te3Br4 clusters, and two TeBr clusters. In each Te3Br4 cluster, there are three inequivalent Te+0.57+ sites. In the first Te+0.57+ site, Te+0.57+ is bonded in a single-bond geometry to one Br1- atom. The Te–Br bond length is 3.34 Å. In the second Te+0.57+ site, Te+0.57+ is bonded in a single-bond geometry to one Br1- atom. The Te–Br bond length is 3.13 Å. In the third Te+0.57+ site, Te+0.57+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. There are a spread of Te–Br bond distances ranging from 2.66–2.94 Å. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a distorted water-like geometry to two Te+0.57+ atoms. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.57+ atom. In the third Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.57+ atom. In the fourth Br1- site, Br1- is bonded in a 1-coordinate geometry to two Te+0.57+ atoms. In each TeBr cluster, there are three inequivalent Te+0.57+ sites. In the first Te+0.57+ site, Te+0.57+ is bonded in a distorted single-bond geometry to one Br1- atom. The Te–Br bond length is 3.07 Å. In the second Te+0.57+ site, Te+0.57+ is bonded in a distorted single-bond geometry to one Br1- atom. The Te–Br bond length is 3.01 Å. In the third Te+0.57+ site, Te+0.57+ is bonded in a T-shaped geometry to three Br1- atoms. There are a spread of Te–Br bond distances ranging from 2.57–2.82 Å. There are three inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in an L-shaped geometry to two Te+0.57+ atoms. In the second Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.57+ atom. In the third Br1- site, Br1- is bonded in a distorted L-shaped geometry to two Te+0.57+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaIr(N2O3)4 by Materials Project

IrNa(NO2)6N2 is Heusler structured and crystallizes in the cubic Fm-3 space group. The structure is zero-dimensional and consists of eight ammonia molecules, four iridium molecules, and four Na(NO2)6 clusters. In each Na(NO2)6 cluster, Na1+ is bonded in a cuboctahedral geometry to twelve equivalent O2- atoms. All Na–O bond lengths are 2.80 Å. N+2.50+ is bonded in a bent 120 degrees geometry to two equivalent O2- atoms. Both N–O bond lengths are 1.24 Å. O2- is bonded in a distorted single-bond geometry to one Na1+ and one N+2.50+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TiInCu2 by Materials Project

TiCu2In is alpha iridium vanadium-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ti is bonded in a body-centered cubic geometry to eight equivalent Cu atoms. All Ti–Cu bond lengths are 2.65 Å. Cu is bonded in a distorted body-centered cubic geometry to four equivalent Ti and four equivalent In atoms. All Cu–In bond lengths are 2.82 Å. In is bonded in a distorted body-centered cubic geometry to eight equivalent Cu atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TiInPd2 by Materials Project

Pd2TiIn is alpha iridium vanadium-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Ti is bonded in a body-centered cubic geometry to eight equivalent Pd atoms. All Ti–Pd bond lengths are 2.71 Å. Pd is bonded in a distorted body-centered cubic geometry to four equivalent Ti and four equivalent In atoms. All Pd–In bond lengths are 2.93 Å. In is bonded in a distorted body-centered cubic geometry to eight equivalent Pd atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on In6Ge2IrO8 by Materials Project

Ir(In3GeO4)2 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional and consists of four iridium molecules and one In3GeO4 framework. In the In3GeO4 framework, In1+ is bonded in a 4-coordinate geometry to four equivalent O2- atoms. All In–O bond lengths are 2.38 Å. Ge3+ is bonded in a tetrahedral geometry to four equivalent O2- atoms. All Ge–O bond lengths are 1.83 Å. O2- is bonded to three equivalent In1+ and one Ge3+ atom to form a mixture of distorted edge and corner-sharing OIn3Ge tetrahedra.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ti2H2CSe4Cl16O5 by Materials Project

Ti2Se4O5Cl14CH2Cl2 is alpha iridium vanadium structured and crystallizes in the monoclinic P2/c space group. The structure is zero-dimensional and consists of two dichloromethane molecules and two Ti2Se4O5Cl14 clusters. In each Ti2Se4O5Cl14 cluster, Ti4+ is bonded to three O2- and three Cl1- atoms to form distorted corner-sharing TiCl3O3 octahedra. The corner-sharing octahedral tilt angles are 18°. There are a spread of Ti–O bond distances ranging from 1.81–2.15 Å. There are a spread of Ti–Cl bond distances ranging from 2.26–2.45 Å. There are two inequivalent Se3+ sites. In the first Se3+ site, Se3+ is bonded in a 1-coordinate geometry to one O2- and two Cl1- atoms. The Se–O bond length is 1.68 Å. There are one shorter (2.20 Å) and one longer (2.21 Å) Se–Cl bond lengths. In the second Se3+ site, Se3+ is bonded in a 1-coordinate geometry to one O2- and two Cl1- atoms. The Se–O bond length is 1.68 Å. Both Se–Cl bond lengths are 2.21 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a linear geometry to two equivalent Ti4+ atoms. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Ti4+ and one Se3+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Ti4+ and one Se3+ atom. There are seven inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Se3+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Se3+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Se3+ atom. In the fourth Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Ti4+ atom. In the fifth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti4+ atom. In the sixth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti4+ atom. In the seventh Cl1- site, Cl1- is bonded in a single-bond geometry to one Se3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Te8IrI5 by Materials Project

Ir(Te)2Te6I5 crystallizes in the triclinic P-1 space group. The structure is one-dimensional and consists of two iridium atom molecules; four telloy molecules; and one Te6I5 ribbon oriented in the (1, 0, 0) direction. In the Te6I5 ribbon, there are six inequivalent Te+0.25+ sites. In the first Te+0.25+ site, Te+0.25+ is bonded in a single-bond geometry to one I1- atom. The Te–I bond length is 3.13 Å. In the second Te+0.25+ site, Te+0.25+ is bonded in a distorted single-bond geometry to two I1- atoms. There are one shorter (3.23 Å) and one longer (3.65 Å) Te–I bond lengths. In the third Te+0.25+ site, Te+0.25+ is bonded in a single-bond geometry to one I1- atom. The Te–I bond length is 3.42 Å. In the fourth Te+0.25+ site, Te+0.25+ is bonded in a rectangular see-saw-like geometry to four I1- atoms. There are a spread of Te–I bond distances ranging from 2.89–3.18 Å. In the fifth Te+0.25+ site, Te+0.25+ is bonded in a distorted bent 150 degrees geometry to two I1- atoms. There are one shorter (3.40 Å) and one longer (3.55 Å) Te–I bond lengths. In the sixth Te+0.25+ site, Te+0.25+ is bonded in a bent 150 degrees geometry to two I1- atoms. There are one shorter (3.47 Å) and one longer (3.55 Å) Te–I bond lengths. There are five inequivalent I1- sites. In the first I1- site, I1- is bonded in a distorted water-like geometry to two Te+0.25+ atoms. In the second I1- site, I1- is bonded in a distorted water-like geometry to two Te+0.25+ atoms. In the third I1- site, I1- is bonded in a single-bond geometry to one Te+0.25+ atom. In the fourth I1- site, I1- is bonded in a 1-coordinate geometry to three Te+0.25+ atoms. In the fifth I1- site, I1- is bonded in a 1-coordinate geometry to four Te+0.25+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on HfInPt2 by Materials Project

HfPt2In is alpha iridium vanadium-derived structured and crystallizes in the tetragonal P4/mmm space group. The structure is three-dimensional. Hf is bonded in a body-centered cubic geometry to eight equivalent Pt atoms. All Hf–Pt bond lengths are 2.81 Å. Pt is bonded in a distorted body-centered cubic geometry to four equivalent Hf and four equivalent In atoms. All Pt–In bond lengths are 3.00 Å. In is bonded in a distorted body-centered cubic geometry to eight equivalent Pt atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on InTe14(IrBr8)2 by Materials Project

(Ir)2InBr4(Te)7(Te2Br3)2(TeBr2)3 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of four iridium molecules, fourteen tellurium molecules, two InBr4 clusters, two Te2Br3 clusters, and two TeBr2 clusters. In each InBr4 cluster, In3+ is bonded in a tetrahedral geometry to four Br1- atoms. There are a spread of In–Br bond distances ranging from 2.54–2.57 Å. There are four inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one In3+ atom. In the second Br1- site, Br1- is bonded in a single-bond geometry to one In3+ atom. In the third Br1- site, Br1- is bonded in a single-bond geometry to one In3+ atom. In the fourth Br1- site, Br1- is bonded in a single-bond geometry to one In3+ atom. In each Te2Br3 cluster, there are four inequivalent Te+0.29+ sites. In the first Te+0.29+ site, Te+0.29+ is bonded in a 1-coordinate geometry to one Br1- atom. The Te–Br bond length is 3.39 Å. In the second Te+0.29+ site, Te+0.29+ is bonded in a distorted single-bond geometry to one Br1- atom. The Te–Br bond length is 3.45 Å. In the third Te+0.29+ site, Te+0.29+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. There are a spread of Te–Br bond distances ranging from 2.64–2.98 Å. In the fourth Te+0.29+ site, Te+0.29+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. There are a spread of Te–Br bond distances ranging from 2.64–2.98 Å. There are six inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.29+ atom. In the second Br1- site, Br1- is bonded in a 2-coordinate geometry to three Te+0.29+ atoms. In the third Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.29+ atom. In the fourth Br1- site, Br1- is bonded in a 2-coordinate geometry to three Te+0.29+ atoms. In the fifth Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.29+ atom. In the sixth Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.29+ atom. In each TeBr2 cluster, there are three inequivalent Te+0.29+ sites. In the first Te+0.29+ site, Te+0.29+ is bonded in a single-bond geometry to one Br1- atom. The Te–Br bond length is 3.33 Å. In the second Te+0.29+ site, Te+0.29+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. There are two shorter (2.67 Å) and two longer (2.94 Å) Te–Br bond lengths. In the third Te+0.29+ site, Te+0.29+ is bonded in a rectangular see-saw-like geometry to four Br1- atoms. There are a spread of Te–Br bond distances ranging from 2.64–3.03 Å. There are six inequivalent Br1- sites. In the first Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.29+ atom. In the second Br1- site, Br1- is bonded in a 2-coordinate geometry to two Te+0.29+ atoms. In the third Br1- site, Br1- is bonded in a 3-coordinate geometry to three Te+0.29+ atoms. In the fourth Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.29+ atom. In the fifth Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.29+ atom. In the sixth Br1- site, Br1- is bonded in a single-bond geometry to one Te+0.29+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Ti2HCSe4Cl16O5 by Materials Project

Ti2Se4O5Cl14CHCl2 is alpha iridium vanadium structured and crystallizes in the monoclinic Pc space group. The structure is zero-dimensional and consists of two dichloromethane molecules and two Ti2Se4O5Cl14 clusters. In each Ti2Se4O5Cl14 cluster, there are two inequivalent Ti+3.50+ sites. In the first Ti+3.50+ site, Ti+3.50+ is bonded to three O2- and three Cl1- atoms to form distorted corner-sharing TiCl3O3 octahedra. The corner-sharing octahedral tilt angles are 17°. There is one shorter (1.82 Å) and two longer (2.14 Å) Ti–O bond length. There are a spread of Ti–Cl bond distances ranging from 2.26–2.45 Å. In the second Ti+3.50+ site, Ti+3.50+ is bonded to three O2- and three Cl1- atoms to form distorted corner-sharing TiCl3O3 octahedra. The corner-sharing octahedral tilt angles are 17°. There are a spread of Ti–O bond distances ranging from 1.81–2.16 Å. There are a spread of Ti–Cl bond distances ranging from 2.26–2.45 Å. There are four inequivalent Se+3.50+ sites. In the first Se+3.50+ site, Se+3.50+ is bonded in a 1-coordinate geometry to one O2- and two Cl1- atoms. The Se–O bond length is 1.68 Å. Both Se–Cl bond lengths are 2.21 Å. In the second Se+3.50+ site, Se+3.50+ is bonded in a 1-coordinate geometry to one O2- and two Cl1- atoms. The Se–O bond length is 1.68 Å. Both Se–Cl bond lengths are 2.21 Å. In the third Se+3.50+ site, Se+3.50+ is bonded in a 1-coordinate geometry to one O2- and two Cl1- atoms. The Se–O bond length is 1.68 Å. There are one shorter (2.20 Å) and one longer (2.22 Å) Se–Cl bond lengths. In the fourth Se+3.50+ site, Se+3.50+ is bonded in a 1-coordinate geometry to one O2- and two Cl1- atoms. The Se–O bond length is 1.68 Å. There are one shorter (2.20 Å) and one longer (2.22 Å) Se–Cl bond lengths. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to one Ti+3.50+ and one Se+3.50+ atom. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to one Ti+3.50+ and one Se+3.50+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to one Ti+3.50+ and one Se+3.50+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one Ti+3.50+ and one Se+3.50+ atom. In the fifth O2- site, O2- is bonded in a linear geometry to two Ti+3.50+ atoms. There are fourteen inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Se+3.50+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Se+3.50+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti+3.50+ atom. In the fourth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti+3.50+ atom. In the fifth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti+3.50+ atom. In the sixth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti+3.50+ atom. In the seventh Cl1- site, Cl1- is bonded in a single-bond geometry to one Se+3.50+ atom. In the eighth Cl1- site, Cl1- is bonded in a single-bond geometry to one Se+3.50+ atom. In the ninth Cl1- site, Cl1- is bonded in a single-bond geometry to one Se+3.50+ atom. In the tenth Cl1- site, Cl1- is bonded in a single-bond geometry to one Se+3.50+ atom. In the eleventh Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Ti+3.50+ atom. In the twelfth Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Ti+3.50+ atom. In the thirteenth Cl1- site, Cl1- is bonded in a single-bond geometry to one Se+3.50+ atom. In the fourteenth Cl1- site, Cl1- is bonded in a single-bond geometry to one Se+3.50+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AsXe2F9 by Materials Project

Xe2F3AsF6 is alpha iridium vanadium-like structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of twelve AsF6 clusters and twelve Xe2F3 clusters. In each AsF6 cluster, As is bonded in an octahedral geometry to six F atoms. There is one shorter (1.77 Å) and five longer (1.78 Å) As–F bond length. There are five inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one As atom. In the second F site, F is bonded in a single-bond geometry to one As atom. In the third F site, F is bonded in a single-bond geometry to one As atom. In the fourth F site, F is bonded in a single-bond geometry to one As atom. In the fifth F site, F is bonded in a single-bond geometry to one As atom. In four of the Xe2F3 clusters, Xe is bonded in a linear geometry to two F atoms. There are one shorter (2.00 Å) and one longer (2.22 Å) Xe–F bond lengths. There are two inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Xe atom. In the second F site, F is bonded in a bent 150 degrees geometry to two equivalent Xe atoms. In eight of the Xe2F3 clusters, there are two inequivalent Xe sites. In the first Xe site, Xe is bonded in a linear geometry to two F atoms. There are one shorter (2.00 Å) and one longer (2.21 Å) Xe–F bond lengths. In the second Xe site, Xe is bonded in a linear geometry to two F atoms. There are one shorter (2.00 Å) and one longer (2.22 Å) Xe–F bond lengths. There are three inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Xe atom. In the second F site, F is bonded in a single-bond geometry to one Xe atom. In the third F site, F is bonded in a bent 150 degrees geometry to two Xe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Measuring Atmospheric Gas Using Small Satellites (Final Report)

The research focused on demonstrating that a small satellite (< 10 kg) is able to provide useable data in support of stratospheric circulation and broader atmospheric measurement generally thought to required large, lengthy and high cost space programs. The research goals targeting enabling CubeSats to serve as science platforms including low-cost communication infrastructure, science enabling solar panels and a ruggedized small form factor science instrument were highly successful with demonstrated on-orbit results. The collection of science data on-orbit was not successful due to a high tumbling rate impacted to the spacecraft at time of release on orbit, preventing reliable solar charging and leading to premature ending of the mission. The successes acquired on orbit will act as a springboard for further research and space projects at LLNL. Several research groups (both private and government) have expressed interest in the area of this research that proved successful such as the solar panels and iridium crosslink as well as the LLNL developed CubeSat standard.

42 ENGINEERING↗
DOE OSTI2021

Bridging Land-Surface Fluxes and Aerosol Concentrations to Triggering Convective Rainfall

During the period August 24-28, 2016, a delayed component the GO-Amazon Project, we launched nine altitude-controlled free balloons (CMET). Smaller than typical rawinsondes, CMET are equipped with altitude control, global communication via Iridium satellite, and aspirated sensors. The aims of our effort were to examine the interactions among convective boundary layer and dual river breeze circulations near the confluence of the Tapajos and Amazon Rivers in the eastern Basin. The week-long field campaign was timed to examine the reestablishment of the breeze circulations shortly after the passage of a strong instability line on August 22. Nine CMET were launched at the Curua-Una hydroelectric dam (2.8S; 54.3W), timed to encounter the Tapajos river breeze front by late afternoon. Soundings were made to establish the thickness of interface between the easterly trade and westerly Tapajos breeze circulation. Careful use of sounding strategies allowed these free balloons to track along the northerly channeled flow in the lowest 300 m above the River. Following the river encounter, balloons tracked to the west, sounding to describe the diurnal course of boundary layer in the forest west of the Tapajos River. The longest flight traveled more than 770 km over three days and twice rested overnight in the rain forest canopy. Ancillary data from surface climate and flux stations as well as the Santarem radiosonde, satellite images will be used to illustrate how the breeze circulations are seen near the surface and how they were disrupted by larger-scale events. Comparisons with HYSPLIT trajectories illustrate how sensitive real trajectories are to the refraction that the encounter with the breeze effects. A second effort was intensive analyses of data from the eddy flux tower at the Tapajós National Forest near Santarém Pará Brazil, with special emphasis on the role of clouds and canopy presence on light absorbance and photosynthetic activity.

54 ENVIRONMENTAL SCIENCES↗
DOE OSTI2021

Examination of Intergranular Crack on SC0234

The microstructure of the SC0234 weld was evaluated per DA-SPEC-01067, ''General Purpose Heat Source (GPHS) Plutonium-238 Dioxide Fueled Clad Product Specification'' and it was determined that the weld microstructure conformed to the quality requirements. During the examination of weld cross section, the metallographic analysis revealed the presence of a surface crack. Prior visual examination per RPS-TA55-303 had not revealed the crack, nor did the surface photography performed per RPS-TA55-302. The presence of the crack does not violate any of the product specifications called out on DA-SPEC-01067. Although there is a well-documented history of weld hot crack susceptibility in the early development of the DOP-26 iridium alloy, a surface crack such as this had not been documented during welding at Los Alamos. In the interest of better understanding the cause; the product engineer/program recommended further examination of the crack. This report discusses the examination of the crack found in the weld cross section of simulant clad SC0234. Metallography, Scanning Electron Microscopy (SEM) and Energy Dispersive Spectroscopy techniques (EDS) where used in the analysis of the crack and the surrounding weld microstructure.

36 MATERIALS SCIENCE↗