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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on SbTe8Cl6O6F31 by Materials Project

SbTe6(OF5)6Te2Cl6F crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one SbTe6(OF5)6 cluster and one Te2Cl6F cluster. In the SbTe6(OF5)6 cluster, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with six TeOF5 octahedra. The corner-sharing octahedra tilt angles range from 39–40°. There is two shorter (1.99 Å) and four longer (2.00 Å) Sb–O bond length. There are three inequivalent Te+5.50+ sites. In the first Te+5.50+ site, Te+5.50+ is bonded to one O2- and five F1- atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 40°. The Te–O bond length is 1.88 Å. There are a spread of Te–F bond distances ranging from 1.87–1.90 Å. In the second Te+5.50+ site, Te+5.50+ is bonded to one O2- and five F1- atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 39°. The Te–O bond length is 1.89 Å. There is one shorter (1.87 Å) and four longer (1.88 Å) Te–F bond length. In the third Te+5.50+ site, Te+5.50+ is bonded to one O2- and five F1- atoms to form TeOF5 octahedra that share a cornercorner with one SbO6 octahedra. The corner-sharing octahedral tilt angles are 40°. The Te–O bond length is 1.89 Å. There are a spread of Te–F bond distances ranging from 1.87–1.89 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one Te+5.50+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one Te+5.50+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one Sb5+ and one Te+5.50+ atom. There are fifteen inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the sixth F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the seventh F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the eighth F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the ninth F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the tenth F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the eleventh F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the twelfth F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the thirteenth F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the fourteenth F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the fifteenth F1- site, F1- is bonded in a single-bond geometry to one Te+5.50+ atom. In the Te2Cl6F cluster, Te+5.50+ is bonded in a rectangular see-saw-like geometry to three Cl1- and one F1- atom. There are two shorter (2.31 Å) and one longer (2.35 Å) Te–Cl bond lengths. The Te–F bond length is 2.24 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Te+5.50+ atom. In the second Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Te+5.50+ atom. In the third Cl1- site, Cl1- is bonded in a distorted single-bond geometry to one Te+5.50+ atom. F1- is bonded in a linear geometry to two equivalent Te+5.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2024

Unravelling the origin of reaction-driven aggregation and fragmentation of atomically dispersed Pt catalyst on ceria support

Metal–support interaction plays a crucial role in governing the stability and activity of atomically dispersed platinum catalysts on ceria support. The migration and aggregation of platinum atoms during the catalytic reaction leads to the redistribution of active sites. In this study, by utilizing a multimodal characterization scheme, we observed the aggregation of platinum atoms at high temperatures under reverse water gas shift reaction conditions and the subsequent fragmentation of platinum clusters, forming “single atoms” upon cooling. Theoretical simulations of both effects uncovered the roles of carbon monoxide binding on perimeter Pt sites in the clusters and hydrogen coverage in the aggregation and fragmentation mechanisms. Finally, this study highlights the complex effects of adsorbate and supports interactions with metal sites in Pt/ceria catalysts that govern their structural transformations under in situ conditions.

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

Materials Data on LiV5H18N2O19 by Materials Project

Li(H2O)5V5O14(NH4)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of four ammonium molecules, one Li(H2O)5 cluster, and one V5O14 cluster. In the Li(H2O)5 cluster, Li1+ is bonded to six O2- atoms to form edge-sharing LiO6 octahedra. There are a spread of Li–O bond distances ranging from 2.10–2.28 Å. 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 0.99 Å. In the second H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the third H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 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 0.98 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 0.98 Å. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. There are five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Li1+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Li1+ and two H1+ atoms. In the third O2- site, O2- is bonded in a distorted water-like geometry to one Li1+ and two H1+ atoms. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to one Li1+ and two H1+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal non-coplanar geometry to one Li1+ and two H1+ atoms. In the V5O14 cluster, there are five inequivalent V5+ sites. In the first V5+ site, V5+ is bonded in a 5-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.63–2.44 Å. In the second V5+ site, V5+ is bonded to six O2- atoms to form distorted edge-sharing VO6 octahedra. There are a spread of V–O bond distances ranging from 1.73–2.11 Å. In the third V5+ site, V5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.66–2.26 Å. In the fourth V5+ site, V5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.65–2.31 Å. In the fifth V5+ site, V5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.63–2.37 Å. There are fourteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms. In the third O2- site, O2- is bonded in a water-like geometry to two V5+ atoms. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms. In the sixth O2- site, O2- is bonded in a trigonal non-coplanar geometry to three V5+ atoms. In the seventh O2- site, O2- is bonded in a trigonal non-coplanar geometry to three V5+ atoms. In the eighth O2- site, O2- is bonded to six V5+ atoms to form distorted edge-sharing OV6 octahedra. In the ninth O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the tenth O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the eleventh O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the twelfth O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the thirteenth O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms. In the fourteenth O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on NaV5H18N2O19 by Materials Project

Na(H2O)5V5O14(NH4)2 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of four ammonium molecules, one Na(H2O)5 cluster, and one V5O14 cluster. In the Na(H2O)5 cluster, Na1+ is bonded to six O2- atoms to form edge-sharing NaO6 octahedra. There are a spread of Na–O bond distances ranging from 2.37–2.49 Å. 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 0.99 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 0.98 Å. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 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 0.98 Å. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.99 Å. In the tenth 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 five inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to two equivalent Na1+ and two H1+ atoms. In the second O2- site, O2- is bonded in a distorted water-like geometry to one Na1+ and two H1+ atoms. In the third O2- site, O2- is bonded in a distorted water-like geometry to one Na1+ and two H1+ atoms. In the fourth O2- site, O2- is bonded in a distorted water-like geometry to one Na1+ and two H1+ atoms. In the fifth O2- site, O2- is bonded in a distorted water-like geometry to one Na1+ and two H1+ atoms. In the V5O14 cluster, there are five inequivalent V5+ sites. In the first V5+ site, V5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.62–2.44 Å. In the second V5+ site, V5+ is bonded to six O2- atoms to form distorted edge-sharing VO6 octahedra. There are a spread of V–O bond distances ranging from 1.73–2.09 Å. In the third V5+ site, V5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.66–2.27 Å. In the fourth V5+ site, V5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.65–2.30 Å. In the fifth V5+ site, V5+ is bonded in a 6-coordinate geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.64–2.36 Å. There are fourteen inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to two V5+ atoms. In the second O2- site, O2- is bonded in a trigonal non-coplanar geometry to three V5+ atoms. In the third O2- site, O2- is bonded in a trigonal non-coplanar geometry to three V5+ atoms. In the fourth O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the fifth O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms. In the sixth O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the seventh O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms. In the eighth O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two V5+ atoms. In the tenth O2- site, O2- is bonded to six V5+ atoms to form distorted edge-sharing OV6 octahedra. In the eleventh O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms. In the twelfth O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms. In the thirteenth O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the fourteenth O2- site, O2- is bonded in a bent 120 degrees geometry to two V5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AgH24C9S3N6ClO4 by Materials Project

AgC9H24(N2S)3ClO4 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of one AgC9H24(N2S)3 cluster and two ClO4 clusters. In the AgC9H24(N2S)3 cluster, Ag1+ is bonded to four S2- atoms to form edge-sharing AgS4 tetrahedra. There are a spread of Ag–S bond distances ranging from 2.54–2.70 Å. There are nine inequivalent C+0.89+ sites. In the first C+0.89+ site, C+0.89+ is bonded in a distorted trigonal planar geometry to two N3- and one S2- atom. Both C–N bond lengths are 1.34 Å. The C–S bond length is 1.73 Å. In the second C+0.89+ site, C+0.89+ is bonded in a tetrahedral geometry to one N3- and three H1+ atoms. The C–N bond length is 1.45 Å. There is one shorter (1.09 Å) and two longer (1.10 Å) C–H bond length. In the third C+0.89+ site, C+0.89+ is bonded in a tetrahedral geometry to one N3- and three H1+ atoms. The C–N bond length is 1.45 Å. All C–H bond lengths are 1.10 Å. In the fourth C+0.89+ site, C+0.89+ is bonded in a distorted trigonal planar geometry to two N3- and one S2- atom. Both C–N bond lengths are 1.34 Å. The C–S bond length is 1.73 Å. In the fifth C+0.89+ site, C+0.89+ is bonded in a tetrahedral geometry to one N3- and three H1+ atoms. The C–N bond length is 1.45 Å. All C–H bond lengths are 1.10 Å. In the sixth C+0.89+ site, C+0.89+ is bonded in a tetrahedral geometry to one N3- and three H1+ atoms. The C–N bond length is 1.45 Å. All C–H bond lengths are 1.10 Å. In the seventh C+0.89+ site, C+0.89+ is bonded in a distorted trigonal planar geometry to two N3- and one S2- atom. Both C–N bond lengths are 1.35 Å. The C–S bond length is 1.71 Å. In the eighth C+0.89+ site, C+0.89+ is bonded in a tetrahedral geometry to one N3- and three H1+ atoms. The C–N bond length is 1.45 Å. There is one shorter (1.09 Å) and two longer (1.10 Å) C–H bond length. In the ninth C+0.89+ site, C+0.89+ is bonded in a tetrahedral geometry to one N3- and three H1+ atoms. The C–N bond length is 1.45 Å. There is one shorter (1.09 Å) and two longer (1.10 Å) C–H bond length. There are six inequivalent N3- sites. In the first N3- site, N3- is bonded in a trigonal planar geometry to two C+0.89+ and one H1+ atom. The N–H bond length is 1.02 Å. In the second N3- site, N3- is bonded in a trigonal planar geometry to two C+0.89+ and one H1+ atom. The N–H bond length is 1.02 Å. In the third N3- site, N3- is bonded in a trigonal planar geometry to two C+0.89+ and one H1+ atom. The N–H bond length is 1.02 Å. In the fourth N3- site, N3- is bonded in a trigonal planar geometry to two C+0.89+ and one H1+ atom. The N–H bond length is 1.03 Å. In the fifth N3- site, N3- is bonded in a trigonal planar geometry to two C+0.89+ and one H1+ atom. The N–H bond length is 1.02 Å. In the sixth N3- site, N3- is bonded in a trigonal planar geometry to two C+0.89+ and one H1+ atom. The N–H bond length is 1.01 Å. There are twenty-four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the thirteenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the fourteenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the fifteenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the sixteenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the seventeenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the eighteenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the nineteenth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the twentieth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the twenty-first H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the twenty-second H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the twenty-third H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. In the twenty-fourth H1+ site, H1+ is bonded in a single-bond geometry to one C+0.89+ atom. There are three inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Ag1+ and one C+0.89+ atom. In the second S2- site, S2- is bonded in a water-like geometry to one Ag1+ and one C+0.89+ atom. In the third S2- site, S2- is bonded in a water-like geometry to one Ag1+ and one C+0.89+ atom. In each ClO4 cluster, there are four inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.49 Å. In the second O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.46 Å. In the third O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.46 Å. In the fourth O2- site, O2- is bonded in a single-bond geometry to one Cl1- atom. The O–Cl bond length is 1.46 Å. Cl1- is bonded in a tetrahedral geometry to four O2- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on MnH30C6(Se2N3)2 by Materials Project

MnH30(CN)6(Se)4 is alpha Niobium phosphide structured and crystallizes in the monoclinic C2/c space group. The structure is zero-dimensional and consists of four MnH30(CN)6 clusters and four Se clusters. In each MnH30(CN)6 cluster, Mn2+ is bonded to six N3- atoms to form MnN6 octahedra that share corners with six CH3N tetrahedra. There are a spread of Mn–N bond distances ranging from 2.31–2.36 Å. There are three inequivalent C1- sites. In the first C1- site, C1- is bonded to one N3- and three H1+ atoms to form CH3N tetrahedra that share a cornercorner with one MnN6 octahedra. The corner-sharing octahedral tilt angles are 60°. The C–N bond length is 1.48 Å. All C–H bond lengths are 1.10 Å. In the second C1- site, C1- is bonded to one N3- and three H1+ atoms to form CH3N tetrahedra that share a cornercorner with one MnN6 octahedra. The corner-sharing octahedral tilt angles are 59°. The C–N bond length is 1.48 Å. All C–H bond lengths are 1.10 Å. In the third C1- site, C1- is bonded to one N3- and three H1+ atoms to form CH3N tetrahedra that share a cornercorner with one MnN6 octahedra. The corner-sharing octahedral tilt angles are 58°. The C–N bond length is 1.48 Å. All C–H bond lengths are 1.10 Å. There are three inequivalent N3- sites. In the first N3- site, N3- is bonded in a 4-coordinate geometry to one Mn2+, one C1-, and two H1+ atoms. Both N–H bond lengths are 1.03 Å. In the second N3- site, N3- is bonded in a 4-coordinate geometry to one Mn2+, one C1-, and two H1+ atoms. There is one shorter (1.03 Å) and one longer (1.04 Å) N–H bond length. In the third N3- site, N3- is bonded in a 4-coordinate geometry to one Mn2+, one C1-, and two H1+ atoms. There is one shorter (1.02 Å) and one longer (1.03 Å) N–H bond length. There are fifteen inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the fifth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the sixth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the seventh H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the eighth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the ninth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the tenth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the eleventh H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the twelfth H1+ site, H1+ is bonded in a single-bond geometry to one N3- atom. In the thirteenth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the fourteenth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In the fifteenth H1+ site, H1+ is bonded in a single-bond geometry to one C1- atom. In each Se cluster, there are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a bent 120 degrees geometry to two Se2- atoms. There are one shorter (2.38 Å) and one longer (2.39 Å) Se–Se bond lengths. In the second Se2- site, Se2- is bonded in a single-bond geometry to one Se2- atom.

36 MATERIALS SCIENCE↗
NASA NTRS1988

Catalog of open clusters and associated interstellar matter

The Catalog of Open Clusters and Associated Interstellar Matter summarizes observations of 128 open clusters and their associated ionized, atomic, and molecular iinterstellar matter. Cluster sizes, distances, radial velocities, ages, and masses, and the radial velocities and masses of associated interstellar medium components, are given. The database contains information from approximately 400 references published in the scientific literature before 1988.

Leisawitz, David↗
NASA NTRS1975

Thermodynamic properties of small aggregates of rare-gas atoms

The present work reports on the equilibrium thermodynamic properties of small clusters of xenon, krypton, and argon atoms, determined from a biased random-walk Monte Carlo procedure. Cluster sizes ranged from 3 to 13 atoms. Each cluster was found to have an abrupt liquid-gas phase transition at a temperature much less than for the bulk material. An abrupt solid-liquid transition is observed for thirteen- and eleven-particle clusters. For cluster sizes smaller than 11, a gradual transition from solid to liquid occurred over a fairly broad range of temperatures. Distribution of number of bond lengths as a function of bond length was calculated for several systems at various temperatures. The effects of box boundary conditions are discussed. Results show the importance of a correct description of boundary conditions. A surprising result is the slow rate at which system properties approach bulk behavior as cluster size is increased.

Etters, R. D.↗
DOE OSTI2020

Materials Data on CIF5 by Materials Project

CF2(CIF5)2CIF4IF4 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one difluoromethane molecule, one CIF4 cluster, two CIF5 clusters, and one IF4 cluster. In the CIF4 cluster, C is bonded in a water-like geometry to one I and two F atoms. The C–I bond length is 2.21 Å. There is one shorter (1.32 Å) and one longer (1.33 Å) C–F bond length. I is bonded in a distorted T-shaped geometry to one C and two F atoms. There are one shorter (2.00 Å) and one longer (2.02 Å) I–F bond lengths. There are four inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one I atom. In the second F site, F is bonded in a single-bond geometry to one I atom. In the third F site, F is bonded in a single-bond geometry to one C atom. In the fourth F site, F is bonded in a single-bond geometry to one C atom. In each CIF5 cluster, C is bonded in a trigonal non-coplanar geometry to one I and three F atoms. The C–I bond length is 2.22 Å. All C–F bond lengths are 1.34 Å. I is bonded in a distorted T-shaped geometry to one C and two F atoms. There are one shorter (2.01 Å) and one longer (2.04 Å) I–F bond lengths. There are five inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one C atom. In the second F site, F is bonded in a single-bond geometry to one I atom. In the third F site, F is bonded in a single-bond geometry to one C atom. In the fourth F site, F is bonded in a single-bond geometry to one C atom. In the fifth F site, F is bonded in a single-bond geometry to one I atom. In the IF4 cluster, I is bonded in a distorted rectangular see-saw-like geometry to four F atoms. There are a spread of I–F bond distances ranging from 1.95–1.97 Å. There are four inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one I atom. In the second F site, F is bonded in a single-bond geometry to one I atom. In the third F site, F is bonded in a single-bond geometry to one I atom. In the fourth F site, F is bonded in a single-bond geometry to one I atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AgS8N9(ClO6)2 by Materials Project

(NAgN)2N2(NS2)4(N2S2O6Cl)4 crystallizes in the tetragonal I-42d space group. The structure is zero-dimensional and consists of four ammonia molecules, eight N2S2O6Cl clusters, four NAgN clusters, and eight NS2 clusters. In each N2S2O6Cl cluster, N+4.56+ is bonded in a distorted bent 150 degrees geometry to one S2- and one Cl1- atom. The N–S bond length is 1.80 Å. The N–Cl bond length is 1.55 Å. S2- is bonded in a distorted tetrahedral geometry to one N+4.56+ and three O2- atoms. There is two shorter (1.45 Å) and one longer (1.46 Å) S–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one S2- atom. In the second O2- site, O2- is bonded in a single-bond geometry to one S2- atom. In the third O2- site, O2- is bonded in a single-bond geometry to one S2- atom. Cl1- is bonded in a bent 150 degrees geometry to two equivalent N+4.56+ atoms. In each NAgN cluster, Ag1+ is bonded in a linear geometry to two equivalent N+4.56+ atoms. Both Ag–N bond lengths are 2.09 Å. N+4.56+ is bonded in a single-bond geometry to one Ag1+ atom. In each NS2 cluster, N+4.56+ is bonded in a linear geometry to two equivalent S2- atoms. Both N–S bond lengths are 1.50 Å. S2- is bonded in a distorted single-bond geometry to one N+4.56+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sb2H10C3NCl9 by Materials Project

CSbCl2CSbH4Cl(H2)4(CHCl)2CClCCl2SbHCl2SbCl2NHClNH2Cl(HCl)2Cl2 crystallizes in the triclinic P1 space group. The structure is zero-dimensional and consists of one chloramine molecule, one chloramine molecule, one chlorine molecule, one chloromethane molecule, two chloromethane molecules, one dichloroantimony molecule, one dichloromethane molecule, two hydrochloric acid molecules, five hydrogen molecules, one CSbCl2 cluster, one CSbH4Cl cluster, and one SbHCl2 cluster. In the CSbCl2 cluster, C+1.33- is bonded in a distorted bent 150 degrees geometry to one Sb3+ and one Cl1- atom. The C–Sb bond length is 2.13 Å. The C–Cl bond length is 1.67 Å. Sb3+ is bonded in an L-shaped geometry to one C+1.33- and one Cl1- atom. The Sb–Cl bond length is 2.44 Å. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Sb3+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one C+1.33- atom. In the CSbH4Cl cluster, C+1.33- is bonded in a distorted tetrahedral geometry to three H1+ and one Cl1- atom. There is one shorter (1.09 Å) and two longer (1.10 Å) C–H bond length. The C–Cl bond length is 1.82 Å. Sb3+ is bonded in a distorted L-shaped geometry to one H1+ and one Cl1- atom. The Sb–H bond length is 1.73 Å. The Sb–Cl bond length is 2.66 Å. There are four inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one Sb3+ atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C+1.33- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C+1.33- atom. In the fourth H1+ site, H1+ is bonded in a single-bond geometry to one C+1.33- atom. Cl1- is bonded in a distorted single-bond geometry to one C+1.33- and one Sb3+ atom. In the SbHCl2 cluster, Sb3+ is bonded in a T-shaped geometry to one H1+ and two Cl1- atoms. The Sb–H bond length is 1.82 Å. There are one shorter (2.50 Å) and one longer (2.86 Å) Sb–Cl bond lengths. H1+ is bonded in a single-bond geometry to one Sb3+ atom. There are two inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Sb3+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Sb3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2022

The many-body expansion for metals. I. The alkaline earth metals Be, Mg, and Ca

We examine the many-body expansion (MBE) for alkaline earth metal clusters, Be n , Mg n , Ca n ( n = 4, 5, 6), at the Møller–Plesset second order perturbation theory, coupled-cluster singles and doubles with perturbative triples, multi-reference perturbation theory, and multi-reference configuration interaction levels of theory. The magnitude of each term in the MBE is evaluated for several geometrical configurations. We find that the behavior of the MBE for these clusters depends strongly on the geometrical arrangement and, to a lesser extent, on the level of theory used. Another factor that affects the MBE is the in situ (ground or excited) electronic state of the individual atoms in the cluster. For most geometries, the three-body term is the largest, followed by a steady decrease in absolute energy for subsequent terms. Though these systems exhibit non-negligible multi-reference effects, there was little qualitative difference in the MBE when employing single vs multi-reference methods. Useful insights into the connectivity and stability of these clusters have been drawn from the respective potential energy surfaces and quasi-atomic orbitals for the various dimers, trimers, and tetramers. Through these analyses, we investigate the similarities and differences in the binding energies of different-sized clusters for these metals.

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

Materials Data on HgP2Xe5F22 by Materials Project

XeF2Hg(XeF2)4(PF6)2 crystallizes in the orthorhombic Pccn space group. The structure is zero-dimensional and consists of four Hg(XeF2)4 clusters, eight PF6 clusters, and four XeF2 clusters. In each Hg(XeF2)4 cluster, 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 (2.04 Å) and one longer (2.13 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 (2.04 Å) and one longer (2.15 Å) Xe–F bond lengths. Hg is bonded in a 4-coordinate geometry to four F atoms. There are two shorter (2.30 Å) and two longer (2.36 Å) Hg–F bond lengths. There are four 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 distorted bent 120 degrees geometry to one Xe and one Hg atom. In the third F site, F is bonded in a single-bond geometry to one Xe atom. In the fourth F site, F is bonded in a bent 150 degrees geometry to one Xe and one Hg atom. In each PF6 cluster, P is bonded in an octahedral geometry to six F atoms. There are a spread of P–F bond distances ranging from 1.63–1.67 Å. There are six inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one P atom. In the second F site, F is bonded in a single-bond geometry to one P atom. In the third F site, F is bonded in a single-bond geometry to one P atom. In the fourth F site, F is bonded in a single-bond geometry to one P atom. In the fifth F site, F is bonded in a single-bond geometry to one P atom. In the sixth F site, F is bonded in a single-bond geometry to one P atom. In each XeF2 cluster, Xe is bonded in a linear geometry to two equivalent F atoms. Both Xe–F bond lengths are 2.08 Å. F is bonded in a single-bond geometry to one Xe atom.

36 MATERIALS SCIENCE↗
DOE OSTI2021

Revealing the Phase Separation Behavior of Thermodynamically Immiscible Elements in a Nanoparticle

Phase-separation is commonly observed in multimetallic nanomaterials, yet it is not well understood how immiscible elements distribute in a thermodynamically stable nanoparticle. Herein, we studied the phase-separation of Au and Rh in nanoparticles using electron microscopy and tomography techniques. The nanoparticles were thermally annealed to form thermodynamically stable structures. HAADF-STEM and EDS characterizations reveal that Au and Rh segregate into two domains while their miscibility is increased. Using aberration-corrected HAADF-STEM and atomic electron tomography, we show that the increased solubility of Au in Rh is achieved by forming Au clusters and single atoms inside the Rh domains and on the Rh surface. Furthermore, based on the three-dimensional reconstruction of a AuRh nanoparticle, we can visualize the uneven interface that is embedded in the nanoparticle. Finally, the results advance our understanding on the nanoscale thermodynamic behavior of metal mixtures, which is crucial for the optimization of multimetallic nanostructures for many applications.

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

Materials Data on SbKr3F11 by Materials Project

Kr2F3KrF2SbF6 crystallizes in the triclinic P-1 space group. The structure is zero-dimensional and consists of two Kr2F3 clusters, two KrF2 clusters, and two SbF6 clusters. In each Kr2F3 cluster, there are two inequivalent Kr sites. In the first Kr site, Kr is bonded in a linear geometry to two F atoms. There is one shorter (1.85 Å) and one longer (2.09 Å) Kr–F bond length. In the second Kr site, Kr is bonded in a linear geometry to two F atoms. There is one shorter (1.86 Å) and one longer (2.08 Å) Kr–F bond length. There are three inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Kr atom. In the second F site, F is bonded in a bent 150 degrees geometry to two Kr atoms. In the third F site, F is bonded in a single-bond geometry to one Kr atom. In each KrF2 cluster, Kr is bonded in a linear geometry to two equivalent F atoms. There is one shorter (1.93 Å) and one longer (1.94 Å) Kr–F bond length. F is bonded in a single-bond geometry to one Kr atom. In each SbF6 cluster, Sb is bonded in an octahedral geometry to six F atoms. There are a spread of Sb–F bond distances ranging from 1.91–1.93 Å. There are six inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Sb atom. In the second F site, F is bonded in a single-bond geometry to one Sb atom. In the third F site, F is bonded in a single-bond geometry to one Sb atom. In the fourth F site, F is bonded in a single-bond geometry to one Sb atom. In the fifth F site, F is bonded in a single-bond geometry to one Sb atom. In the sixth F site, F is bonded in a single-bond geometry to one Sb atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sb2(KrF4)5 by Materials Project

(Kr2F3)2KrF2(SbF6)2 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of eight Kr2F3 clusters, four KrF2 clusters, and eight SbF6 clusters. In each Kr2F3 cluster, there are two inequivalent Kr sites. In the first Kr site, Kr is bonded in a linear geometry to two F atoms. There is one shorter (1.86 Å) and one longer (2.09 Å) Kr–F bond length. In the second Kr site, Kr is bonded in a linear geometry to two F atoms. There is one shorter (1.85 Å) and one longer (2.10 Å) Kr–F bond length. There are three inequivalent F sites. In the first F site, F is bonded in a bent 120 degrees geometry to two Kr atoms. In the second F site, F is bonded in a single-bond geometry to one Kr atom. In the third F site, F is bonded in a single-bond geometry to one Kr atom. In each KrF2 cluster, Kr is bonded in a linear geometry to two equivalent F atoms. There is one shorter (1.93 Å) and one longer (1.94 Å) Kr–F bond length. F is bonded in a single-bond geometry to one Kr atom. In each SbF6 cluster, Sb is bonded in an octahedral geometry to six F atoms. There is two shorter (1.92 Å) and four longer (1.93 Å) Sb–F bond length. There are six inequivalent F sites. In the first F site, F is bonded in a single-bond geometry to one Sb atom. In the second F site, F is bonded in a single-bond geometry to one Sb atom. In the third F site, F is bonded in a single-bond geometry to one Sb atom. In the fourth F site, F is bonded in a single-bond geometry to one Sb atom. In the fifth F site, F is bonded in a single-bond geometry to one Sb atom. In the sixth F site, F is bonded in a single-bond geometry to one Sb atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on ReSbOF10 by Materials Project

Re2O2F9Sb2F11 is Tetraauricupride structured and crystallizes in the monoclinic P2 space group. The structure is zero-dimensional and consists of one Re2O2F9 cluster and one Sb2F11 cluster. In the Re2O2F9 cluster, Re7+ is bonded to one O2- and five F1- atoms to form distorted corner-sharing ReOF5 octahedra. The corner-sharing octahedral tilt angles are 8°. The Re–O bond length is 1.68 Å. There are a spread of Re–F bond distances ranging from 1.84–2.13 Å. O2- is bonded in a single-bond geometry to one Re7+ atom. There are five inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Re7+ atom. In the second F1- site, F1- is bonded in a linear geometry to two equivalent Re7+ atoms. In the third F1- site, F1- is bonded in a single-bond geometry to one Re7+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Re7+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one Re7+ atom. In the Sb2F11 cluster, Sb5+ is bonded to six F1- atoms to form corner-sharing SbF6 octahedra. The corner-sharing octahedral tilt angles are 2°. There is five shorter (1.90 Å) and one longer (2.08 Å) Sb–F bond length. There are six inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one Sb5+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one Sb5+ atom. In the third F1- site, F1- is bonded in a linear geometry to two equivalent Sb5+ atoms. In the fourth F1- site, F1- is bonded in a single-bond geometry to one Sb5+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one Sb5+ atom. In the sixth F1- site, F1- is bonded in a single-bond geometry to one Sb5+ atom.

36 MATERIALS SCIENCE↗