Engineering Papers⌕ Search

SEARCH · Engineering Papers

Results for “cluster structure”

Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,801 records · Page 100
All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on AsXe2O4F9 by Materials Project

Xe2O4F3AsF6 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four AsF6 clusters and four Xe2O4F3 clusters. In each AsF6 cluster, As is bonded in an octahedral geometry to six F atoms. There are a spread of As–F bond distances ranging from 1.74–1.80 Å. There are six 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 the sixth F site, F is bonded in a single-bond geometry to one As atom. In each Xe2O4F3 cluster, there are two inequivalent Xe sites. In the first Xe site, Xe is bonded in a distorted see-saw-like geometry to two O and two F atoms. Both Xe–O bond lengths are 1.85 Å. There are one shorter (2.03 Å) and one longer (2.31 Å) Xe–F bond lengths. In the second Xe site, Xe is bonded in a distorted see-saw-like geometry to two O and two F atoms. Both Xe–O bond lengths are 1.85 Å. There are one shorter (2.04 Å) and one longer (2.28 Å) Xe–F bond lengths. There are four inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one Xe atom. In the second O site, O is bonded in a single-bond geometry to one Xe atom. In the third O site, O is bonded in a single-bond geometry to one Xe atom. In the fourth O site, O is bonded in a single-bond geometry to one Xe atom. 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 linear geometry to two Xe atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on TaH6C2SeCl5 by Materials Project

TaC2H6SeCl5 is Tungsten structured and crystallizes in the orthorhombic Cmc2_1 space group. The structure is zero-dimensional and consists of four TaC2H6SeCl5 clusters. Ta5+ is bonded in a distorted octahedral geometry to one Se2- and five Cl1- atoms. The Ta–Se bond length is 2.88 Å. There are a spread of Ta–Cl bond distances ranging from 2.31–2.35 Å. C2- is bonded in a trigonal non-coplanar geometry to three H1+ and one Se2- atom. There is one shorter (1.09 Å) and two longer (1.10 Å) C–H bond length. The C–Se bond length is 1.96 Å. There are three inequivalent H1+ sites. In the first H1+ site, H1+ is bonded in a single-bond geometry to one C2- atom. In the second H1+ site, H1+ is bonded in a single-bond geometry to one C2- atom. In the third H1+ site, H1+ is bonded in a single-bond geometry to one C2- atom. Se2- is bonded in a distorted trigonal non-coplanar geometry to one Ta5+ and two equivalent C2- atoms. There are four inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta5+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta5+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta5+ atom. In the fourth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ta5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Sn2BF7 by Materials Project

BF4Sn2F3 crystallizes in the monoclinic P2_1/c space group. The structure is one-dimensional and consists of four BF4 clusters and two Sn2F3 ribbons oriented in the (1, 0, 0) direction. In each BF4 cluster, B3+ is bonded in a tetrahedral geometry to four F1- atoms. There is three shorter (1.42 Å) and one longer (1.43 Å) B–F bond length. There are four inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one B3+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one B3+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one B3+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one B3+ atom. In each Sn2F3 ribbon, there are two inequivalent Sn2+ sites. In the first Sn2+ site, Sn2+ is bonded in a distorted T-shaped geometry to three F1- atoms. There are one shorter (2.13 Å) and two longer (2.15 Å) Sn–F bond lengths. In the second Sn2+ site, Sn2+ is bonded in a distorted T-shaped geometry to three F1- atoms. There are a spread of Sn–F bond distances ranging from 2.14–2.18 Å. There are three inequivalent F1- sites. In the first F1- site, F1- is bonded in a linear geometry to two Sn2+ atoms. In the second F1- site, F1- is bonded in a bent 150 degrees geometry to two Sn2+ atoms. In the third F1- site, F1- is bonded in a linear geometry to two Sn2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on P4Se5 by Materials Project

P4Se5 is beta-like structured and crystallizes in the orthorhombic Pna2_1 space group. The structure is zero-dimensional and consists of four P4Se5 clusters. there are four inequivalent P+2.50+ sites. In the first P+2.50+ site, P+2.50+ is bonded in a single-bond geometry to one Se2- atom. The P–Se bond length is 2.23 Å. In the second P+2.50+ site, P+2.50+ is bonded in a water-like geometry to two Se2- atoms. There are one shorter (2.30 Å) and one longer (2.33 Å) P–Se bond lengths. In the third P+2.50+ site, P+2.50+ is bonded in a trigonal non-coplanar geometry to three Se2- atoms. There are one shorter (2.14 Å) and two longer (2.30 Å) P–Se bond lengths. In the fourth P+2.50+ site, P+2.50+ is bonded in a trigonal non-coplanar geometry to three Se2- atoms. There are a spread of P–Se bond distances ranging from 2.28–2.32 Å. There are five inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a single-bond geometry to one P+2.50+ atom. In the second Se2- site, Se2- is bonded in a water-like geometry to two P+2.50+ atoms. In the third Se2- site, Se2- is bonded in a water-like geometry to two P+2.50+ atoms. In the fourth Se2- site, Se2- is bonded in a water-like geometry to two P+2.50+ atoms. In the fifth Se2- site, Se2- is bonded in an L-shaped geometry to two P+2.50+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on P4S5 by Materials Project

P4S5 is alpha U structured and crystallizes in the monoclinic P2_1 space group. The structure is zero-dimensional and consists of two P4S5 clusters. there are four inequivalent P+2.50+ sites. In the first P+2.50+ site, P+2.50+ is bonded in a water-like geometry to two S2- atoms. There are one shorter (2.13 Å) and one longer (2.17 Å) P–S bond lengths. In the second P+2.50+ site, P+2.50+ is bonded in a single-bond geometry to one S2- atom. The P–S bond length is 2.07 Å. In the third P+2.50+ site, P+2.50+ is bonded in a trigonal non-coplanar geometry to three S2- atoms. There are a spread of P–S bond distances ranging from 1.94–2.13 Å. In the fourth P+2.50+ site, P+2.50+ is bonded in a trigonal non-coplanar geometry to three S2- atoms. There are two shorter (2.13 Å) and one longer (2.16 Å) P–S bond lengths. There are five inequivalent S2- sites. In the first S2- site, S2- is bonded in a water-like geometry to two P+2.50+ atoms. In the second S2- site, S2- is bonded in a water-like geometry to two P+2.50+ atoms. In the third S2- site, S2- is bonded in a water-like geometry to two P+2.50+ atoms. In the fourth S2- site, S2- is bonded in an L-shaped geometry to two P+2.50+ atoms. In the fifth S2- site, S2- is bonded in a single-bond geometry to one P+2.50+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on IrWN5ClO4 by Materials Project

WIrN5O4Cl is Theoretical Carbon Structure-like structured and crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of four WIrN5O4Cl clusters. W6+ is bonded in a 5-coordinate geometry to four O2- and one Cl1- atom. There are two shorter (1.75 Å) and two longer (2.38 Å) W–O bond lengths. The W–Cl bond length is 2.54 Å. Ir4+ is bonded in a distorted trigonal non-coplanar geometry to three N+0.20- and one Cl1- atom. There is two shorter (1.75 Å) and one longer (1.76 Å) Ir–N bond length. The Ir–Cl bond length is 2.53 Å. There are three inequivalent N+0.20- sites. In the first N+0.20- site, N+0.20- is bonded in a single-bond geometry to one Ir4+ atom. In the second N+0.20- site, N+0.20- is bonded in a single-bond geometry to one O2- atom. The N–O bond length is 1.19 Å. In the third N+0.20- site, N+0.20- is bonded in a distorted single-bond geometry to one Ir4+ atom. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one W6+ atom. In the second O2- site, O2- is bonded in a 1-coordinate geometry to one W6+ and one N+0.20- atom. In the third O2- site, O2- is bonded in a distorted single-bond geometry to one W6+ atom. Cl1- is bonded in a bent 120 degrees geometry to one W6+ and one Ir4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2025

Solute clustering in polycrystals: Unveiling the interplay of grain boundary junction and long-range solute attraction effects

Spectral analysis of local atomic environments has become a powerful tool for studying solute atom segregation and interactions at grain boundaries in nanocrystalline alloys. When applied to individual grain boundaries, the spectral analysis has shown that solute-solute interaction can be either attractive or repulsive, with long-range relative attraction enhancing the likelihood for solute atoms to begin clustering. In this article, we combine this analysis with a new grain-boundary structure descriptor based on grain-boundary atom coordination, to investigate the impact of grain-boundary junctions on solute atom segregation in polycrystals. Specifically, we systematically characterize the tendency of solute clusters to begin forming at various types of ordinary grain boundaries, triple junctions, and high-order junctions in Ag polycrystals containing either Ni or Cu solute atoms. Our findings demonstrate that the formation of solute clusters at grain boundaries is primarily driven by long-range relative solute attraction, rather than short-range solute-solute interactions. Furthermore, this effect is most pronounced near grain-boundary junctions. Our study highlights the multiscale nature of solute segregation at crystalline interfaces and provides new insights into the complex phenomena governing heterogeneous solute segregation in grain-boundary networks.

Grain-boundary junction↗
DOE OSTI2026

Hydrophobic Metal–Organic Frameworks Enable Superior High-Pressure Ammonia Storage through Geometric Design

Hydrophobic metal–organic frameworks (MOFs) are typically overlooked for ammonia storage due to weak host–guest interactions. Here, we demonstrate that four structurally analogous aluminum-based MOFs exhibit a counterintuitive behavior whereby framework geometry, rather than ligand hydrophilicity, determines high-pressure NH 3 adsorption performance. The hydrophobic CAU-23 achieved an exceptional capacity matching hydrophilic analogs despite its poor low-pressure uptake. This pressure-dependent enhancement stems from the unique 4-cis-4-trans geometry of CAU-23 compared to the purely cis arrangement of MIL-160 and KMF-1 and the alternating cis-trans configuration of MOF-303. Critically, CAU-23 retained 95% capacity over three high-pressure cycles, whereas hydrophilic MOFs suffered 39–46% irreversible losses due to strong NH 3 -framework interactions that compromise structural integrity. Grand canonical Monte Carlo simulations reveal that high pressure enables NH 3 clustering through intermolecular hydrogen bonding, bypassing the need for strong host–guest interactions. High-pressure powder X-ray diffraction measurements confirm the exceptional mechanical resilience of CAU-23, showing complete structural recovery upon decompression despite exhibiting the highest pressure sensitivity among the studied MOFs. An extended analog, HE-CAU-23, validates this design principle with further enhanced capacity. Furthermore, these findings reveal a paradigm shift toward hydrophobic MOFs with optimized geometry for high-performance and regenerable gas storage applications.

MOFs↗
DOE OSTI2021

Atomic arrangements in an amorphous CoFeB ribbon extracted via an analysis of radial distribution functions

Here we discuss the atomic structure of amorphous ferromagnetic FeCoB alloys, which are used widely in spintronics applications. Specifically, we obtain the pair-distribution functions for various atomic pairs based on high-energy x-ray diffraction data taken from an amorphous Co 20 Fe 61 B 19 specimen. We start our reverse Monte Carlo cycles to determine the disordered structure with a two-phase model in which a small amount of cobalt is mixed with Fe 23 B 6 as a second phase. The structure of the alloy is found to be heterogeneous, where the boron atoms drive disorder through the random occupation of the atomic network. Our analysis also indicates the presence of small cobalt clusters that are embedded in the iron matrix and percolating the latter throughout the structure. This morphology can explain the enhanced spin polarization observed in amorphous magnetic materials.

71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗
DOE OSTI2024

The Galaxy–Galaxy Strong Lensing Cross Section and the Internal Distribution of Matter in ΛCDM Substructure

Abstract Strong gravitational lensing offers a powerful probe of the detailed distribution of matter in lenses, while magnifying and bringing faint background sources into view. Observed strong lensing by massive galaxy clusters, which are often in complex dynamical states, has also been used to map their dark matter (DM) substructures on smaller scales. Deep high-resolution imaging has revealed the presence of strong lensing events associated with these substructures, namely galaxy-scale sub-halos. However, an inventory of these observed galaxy–galaxy strong lensing (GGSL) events is noted to be discrepant with state-of-the-art ΛCDM simulations. Cluster sub-halos appear to be over-concentrated compared to their simulated counterparts yielding an order-of-magnitude higher value of GGSL. In this paper, we explore the possibility of resolving this observed discrepancy by redistributing the mass within observed cluster sub-halos in ways that are consistent within the ΛCDM paradigm of structure formation. Lensing mass reconstructions from data provide constraints on the mass enclosed within apertures and are agnostic to the detailed mass profile within them. Therefore, as the detailed density profile within cluster sub-halos currently remains unconstrained by data, we are afforded the freedom to redistribute the enclosed mass. We investigate if rearranging the mass to a more centrally concentrated density profile helps alleviate the GGSL discrepancy. We report that refitting cluster sub-halos to the ubiquitous ΛCDM-motivated Navarro–Frenk–White profile, and further modifying them to include significant baryonic components, does not resolve this tension. A resolution to this persisting GGSL discrepancy may require more careful exploration of alternative DM models.

Astronomy & Astrophysics↗
DOE OSTI2021

Towards complete assignment of the infrared spectrum of the protonated water cluster H + (H 2 O) 21

The spectroscopic features of protonated water species in dilute acid solutions have been long sought after for understanding the microscopic behavior of the proton in water with gas-phase water clusters H + (H 2 O) n extensively studied as bottom-up model systems. We present a new protocol for the calculation of the infrared (IR) spectra of complex systems, which combines the fragment-based Coupled Cluster method and anharmonic vibrational quasi-degenerate perturbation theory, and demonstrate its accuracy towards the complete and accurate assignment of the IR spectrum of the H + (H 2 O) 21 cluster. The site-specific IR spectral signatures reveal two distinct structures for the internal and surface four-coordinated water molecules, which are ice-like and liquid-like, respectively. The effect of inter-molecular interaction between water molecules is addressed, and the vibrational resonance is found between the O-H stretching fundamental and the bending overtone of the nearest neighboring water molecule. The revelation of the spectral signature of the excess proton offers deeper insight into the nature of charge accommodation in the extended hydrogen-bonding network underpinning this aqueous cluster.

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

Materials Data on Ti2SCl12 by Materials Project

Ti2Cl9SCl3 crystallizes in the trigonal R-3 space group. The structure is zero-dimensional and consists of eighteen SCl3 clusters and eighteen Ti2Cl9 clusters. In each SCl3 cluster, S4+ is bonded in a trigonal non-coplanar geometry to three Cl1- atoms. There are a spread of S–Cl bond distances ranging from 2.00–2.02 Å. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one S4+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one S4+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one S4+ atom. In each Ti2Cl9 cluster, there are two inequivalent Ti4+ sites. In the first Ti4+ site, Ti4+ is bonded to six Cl1- atoms to form face-sharing TiCl6 octahedra. There are a spread of Ti–Cl bond distances ranging from 2.21–2.55 Å. In the second Ti4+ site, Ti4+ is bonded to six Cl1- atoms to form distorted face-sharing TiCl6 octahedra. There are a spread of Ti–Cl bond distances ranging from 2.21–2.62 Å. There are nine inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti4+ atom. In the second Cl1- site, Cl1- is bonded in an L-shaped geometry to two Ti4+ atoms. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti4+ atom. In the fourth Cl1- site, Cl1- is bonded in an L-shaped geometry to two Ti4+ atoms. 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 an L-shaped geometry to two Ti4+ atoms. In the seventh Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti4+ atom. In the eighth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti4+ atom. In the ninth Cl1- site, Cl1- is bonded in a single-bond geometry to one Ti4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AlH6N2Cl3 by Materials Project

AlCl4AlH12(N2Cl)2 crystallizes in the orthorhombic Pnma space group. The structure is zero-dimensional and consists of four AlCl4 clusters and four AlH12(N2Cl)2 clusters. In each AlCl4 cluster, Al3+ is bonded in a tetrahedral geometry to four Cl1- atoms. There are one shorter (2.15 Å) and three longer (2.17 Å) Al–Cl bond lengths. There are three inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a single-bond geometry to one Al3+ atom. In the second Cl1- site, Cl1- is bonded in a single-bond geometry to one Al3+ atom. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Al3+ atom. In each AlH12(N2Cl)2 cluster, Al3+ is bonded in an octahedral geometry to four N3- and two equivalent Cl1- atoms. There are two shorter (2.02 Å) and two longer (2.06 Å) Al–N bond lengths. Both Al–Cl bond lengths are 2.35 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded to one Al3+ and three H1+ atoms to form distorted corner-sharing NAlH3 tetrahedra. There is one shorter (1.02 Å) and two longer (1.03 Å) N–H bond length. In the second N3- site, N3- is bonded to one Al3+ and three H1+ atoms to form distorted corner-sharing NAlH3 tetrahedra. All N–H bond lengths are 1.03 Å. There are six 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. Cl1- is bonded in a single-bond geometry to one Al3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AsBrKr2OF12 by Materials Project

Kr2OBrF6AsF6 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four AsF6 clusters and four Kr2OBrF6 clusters. In each AsF6 cluster, As is bonded in an octahedral geometry to six F atoms. There are a spread of As–F bond distances ranging from 1.76–1.82 Å. There are six 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 the sixth F site, F is bonded in a single-bond geometry to one As atom. In each Kr2OBrF6 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 (1.89 Å) and one longer (2.00 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 (1.90 Å) and one longer (1.99 Å) Kr–F bond length. O is bonded in a single-bond geometry to one Br atom. The O–Br bond length is 1.59 Å. Br is bonded in a 5-coordinate geometry to one O and four F atoms. There are a spread of Br–F bond distances ranging from 1.79–2.37 Å. There are six 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 single-bond geometry to one Kr atom. In the third F site, F is bonded in a bent 150 degrees geometry to one Kr and one Br atom. In the fourth F site, F is bonded in a single-bond geometry to one Br atom. In the fifth F site, F is bonded in a single-bond geometry to one Br atom. In the sixth F site, F is bonded in a distorted bent 120 degrees geometry to one Kr and one Br atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V2C12(NF3)3 by Materials Project

V2F9(C4N)3 is Sodium arsenide structured and crystallizes in the monoclinic P2_1 space group. The structure is zero-dimensional and consists of six C4N clusters and two V2F9 clusters. In each C4N cluster, there are four inequivalent C+0.67+ sites. In the first C+0.67+ site, C+0.67+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.70 Å. In the second C+0.67+ site, C+0.67+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.46 Å. In the third C+0.67+ site, C+0.67+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.53 Å. In the fourth C+0.67+ site, C+0.67+ is bonded in a single-bond geometry to one N3- atom. The C–N bond length is 1.54 Å. N3- is bonded in a 3-coordinate geometry to four C+0.67+ atoms. In each V2F9 cluster, there are two inequivalent V5+ sites. In the first V5+ site, V5+ is bonded to six F1- atoms to form distorted face-sharing VF6 octahedra. There are a spread of V–F bond distances ranging from 1.78–2.05 Å. In the second V5+ site, V5+ is bonded to six F1- atoms to form distorted face-sharing VF6 octahedra. There are a spread of V–F bond distances ranging from 1.78–2.05 Å. There are nine inequivalent F1- sites. In the first F1- site, F1- is bonded in a single-bond geometry to one V5+ atom. In the second F1- site, F1- is bonded in a single-bond geometry to one V5+ atom. In the third F1- site, F1- is bonded in a single-bond geometry to one V5+ atom. In the fourth F1- site, F1- is bonded in a single-bond geometry to one V5+ atom. In the fifth F1- site, F1- is bonded in a single-bond geometry to one V5+ atom. In the sixth F1- site, F1- is bonded in a single-bond geometry to one V5+ atom. In the seventh F1- site, F1- is bonded in an L-shaped geometry to two V5+ atoms. In the eighth F1- site, F1- is bonded in an L-shaped geometry to two V5+ atoms. In the ninth F1- site, F1- is bonded in an L-shaped geometry to two V5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on Te4As2I2O by Materials Project

As2Te3TeOI2 crystallizes in the triclinic P1 space group. The structure is two-dimensional and consists of one TeOI2 cluster and one As2Te3 sheet oriented in the (0, 0, 1) direction. In the TeOI2 cluster, Te+2.50+ is bonded in a distorted single-bond geometry to one O2- and two I1- atoms. The Te–O bond length is 1.82 Å. There are one shorter (2.83 Å) and one longer (2.84 Å) Te–I bond lengths. O2- is bonded in a single-bond geometry to one Te+2.50+ atom. There are two inequivalent I1- sites. In the first I1- site, I1- is bonded in a single-bond geometry to one Te+2.50+ atom. In the second I1- site, I1- is bonded in a single-bond geometry to one Te+2.50+ atom. In the As2Te3 sheet, there are two inequivalent As3- sites. In the first As3- site, As3- is bonded in a distorted T-shaped geometry to three Te+2.50+ atoms. There are two shorter (2.64 Å) and one longer (2.67 Å) As–Te bond lengths. In the second As3- site, As3- is bonded in a 3-coordinate geometry to three Te+2.50+ atoms. There are a spread of As–Te bond distances ranging from 2.64–2.66 Å. There are three inequivalent Te+2.50+ sites. In the first Te+2.50+ site, Te+2.50+ is bonded in an L-shaped geometry to two As3- atoms. In the second Te+2.50+ site, Te+2.50+ is bonded in a water-like geometry to two As3- atoms. In the third Te+2.50+ site, Te+2.50+ is bonded in a water-like geometry to two As3- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on P2S3 by Materials Project

P2S3 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four P2S3 clusters. there are four inequivalent P3+ sites. In the first P3+ site, P3+ is bonded in a tetrahedral geometry to four S2- atoms. There are a spread of P–S bond distances ranging from 1.93–2.12 Å. In the second P3+ site, P3+ is bonded in a water-like geometry to two S2- atoms. There are one shorter (2.12 Å) and one longer (2.13 Å) P–S bond lengths. In the third P3+ site, P3+ is bonded in a water-like geometry to two S2- atoms. There are one shorter (2.12 Å) and one longer (2.13 Å) P–S bond lengths. In the fourth P3+ site, P3+ is bonded in a trigonal non-coplanar geometry to three S2- atoms. There are a spread of P–S bond distances ranging from 2.11–2.18 Å. There are six inequivalent S2- sites. In the first S2- site, S2- is bonded in a water-like geometry to two P3+ atoms. In the second S2- site, S2- is bonded in a water-like geometry to two P3+ atoms. In the third S2- site, S2- is bonded in a bent 120 degrees geometry to two P3+ atoms. In the fourth S2- site, S2- is bonded in a water-like geometry to two P3+ atoms. In the fifth S2- site, S2- is bonded in a water-like geometry to two P3+ atoms. In the sixth S2- site, S2- is bonded in a single-bond geometry to one P3+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on AsSXe2(OF3)3 by Materials Project

Xe2S(OF)3AsF6 crystallizes in the monoclinic P2_1/c space group. The structure is zero-dimensional and consists of four AsF6 clusters and four Xe2S(OF)3 clusters. In each AsF6 cluster, As is bonded in an octahedral geometry to six F atoms. There are a spread of As–F bond distances ranging from 1.77–1.79 Å. There are six 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 the sixth F site, F is bonded in a single-bond geometry to one As atom. In each Xe2S(OF)3 cluster, there are two inequivalent Xe sites. In the first Xe site, Xe is bonded in a linear geometry to one O and one F atom. The Xe–O bond length is 2.31 Å. The Xe–F bond length is 2.01 Å. In the second Xe site, Xe is bonded in a linear geometry to one O and one F atom. The Xe–O bond length is 2.29 Å. The Xe–F bond length is 2.02 Å. S is bonded in a tetrahedral geometry to three O and one F atom. There are a spread of S–O bond distances ranging from 1.42–1.50 Å. The S–F bond length is 1.57 Å. There are three inequivalent O sites. In the first O site, O is bonded in a single-bond geometry to one S atom. In the second O site, O is bonded in a distorted bent 120 degrees geometry to one Xe and one S atom. In the third O site, O is bonded in a distorted bent 120 degrees geometry to one Xe and one S atom. 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 S atom. In the third F site, F is bonded in a single-bond geometry to one Xe atom.

36 MATERIALS SCIENCE↗

Refine your search to explore more results.