Search NASA⌕ Search

SEARCH · Search NASA

Results for “V&V”

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 307 records · Page 17
All sourcesNASA NTRSDOE OSTI
DOE OSTI2023

The ASAS-SN bright supernova catalogue – V. 2018–2020

We catalogue the 443 bright supernovae (SNe) discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN) in 2018−2020 along with the 519 SNe recovered by ASAS-SN and 516 additional m peak ≤ 18 mag SNe missed by ASAS-SN. Our statistical analysis focuses primarily on the 984 SNe discovered or recovered in ASAS-SN g-band observations. The complete sample of 2427 ASAS-SN SNe includes earlier V-band samples and unrecovered SNe. For each SN, we identify the host galaxy, its UV to mid-IR photometry, and the SN’s offset from the centre of the host. Updated peak magnitudes, redshifts, spectral classifications, and host galaxy identifications supersede earlier results. With the increase of the limiting magnitude to g ≤ 18 mag, the ASAS-SN sample is nearly complete up to m peak = 16.7 mag and is 90 per cent complete for m peak ≤ 17.0 mag. This is an increase from the V-band sample, where it was roughly complete up to m peak = 16.2 mag and 70 per cent complete for m peak ≤ 17.0 mag.

79 ASTRONOMY AND ASTROPHYSICS↗
DOE OSTI2020

Materials Data on V(NiP4)4 by Materials Project

V(NiP4)4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. V2+ is bonded in a 8-coordinate geometry to eight P+0.50- atoms. There are a spread of V–P bond distances ranging from 2.41–2.49 Å. There are two inequivalent Ni+1.50+ sites. In the first Ni+1.50+ site, Ni+1.50+ is bonded to six P+0.50- atoms to form NiP6 octahedra that share corners with six NiP6 octahedra, corners with four PNi3P tetrahedra, and an edgeedge with one NiP6 octahedra. The corner-sharing octahedra tilt angles range from 57–66°. There are a spread of Ni–P bond distances ranging from 2.23–2.36 Å. In the second Ni+1.50+ site, Ni+1.50+ is bonded to six P+0.50- atoms to form NiP6 octahedra that share corners with four equivalent NiP6 octahedra and corners with three PNi2P2 tetrahedra. The corner-sharing octahedra tilt angles range from 57–64°. There are a spread of Ni–P bond distances ranging from 2.25–2.32 Å. There are eight inequivalent P+0.50- sites. In the first P+0.50- site, P+0.50- is bonded in a 4-coordinate geometry to one V2+, one Ni+1.50+, and two P+0.50- atoms. There are one shorter (2.24 Å) and one longer (2.26 Å) P–P bond lengths. In the second P+0.50- site, P+0.50- is bonded to two Ni+1.50+ and two P+0.50- atoms to form distorted PNi2P2 tetrahedra that share a cornercorner with one NiP6 octahedra and corners with nine PNi3P tetrahedra. The corner-sharing octahedral tilt angles are 73°. The P–P bond length is 2.24 Å. In the third P+0.50- site, P+0.50- is bonded to three Ni+1.50+ and one P+0.50- atom to form distorted PNi3P tetrahedra that share corners with two equivalent NiP6 octahedra, corners with ten PNi2P2 tetrahedra, and an edgeedge with one PNi3P tetrahedra. The corner-sharing octahedra tilt angles range from 73–77°. The P–P bond length is 2.21 Å. In the fourth P+0.50- site, P+0.50- is bonded to two equivalent Ni+1.50+ and two P+0.50- atoms to form distorted PNi2P2 tetrahedra that share corners with three NiP6 octahedra and corners with twelve PNi2P2 tetrahedra. The corner-sharing octahedra tilt angles range from 70–82°. The P–P bond length is 2.27 Å. In the fifth P+0.50- site, P+0.50- is bonded in a 2-coordinate geometry to one V2+, one Ni+1.50+, and two P+0.50- atoms. The P–P bond length is 2.26 Å. In the sixth P+0.50- site, P+0.50- is bonded in a 4-coordinate geometry to one V2+ and three P+0.50- atoms. The P–P bond length is 2.26 Å. In the seventh P+0.50- site, P+0.50- is bonded to two Ni+1.50+ and two P+0.50- atoms to form distorted PNi2P2 tetrahedra that share a cornercorner with one NiP6 octahedra and corners with nine PNi2P2 tetrahedra. The corner-sharing octahedral tilt angles are 73°. The P–P bond length is 2.24 Å. In the eighth P+0.50- site, P+0.50- is bonded in a 4-coordinate geometry to one V2+, one Ni+1.50+, and two P+0.50- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(HO)2 by Materials Project

V(OH)2 crystallizes in the orthorhombic Pnnm space group. The structure is three-dimensional. V2+ is bonded to six equivalent O2- atoms to form a mixture of corner and edge-sharing VO6 octahedra. The corner-sharing octahedral tilt angles are 51°. There are four shorter (2.22 Å) and two longer (2.23 Å) V–O bond lengths. H1+ is bonded in a single-bond geometry to one O2- atom. The H–O bond length is 0.98 Å. O2- is bonded in a distorted single-bond geometry to three equivalent V2+ and one H1+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(PO3)4 by Materials Project

V(PO3)4 crystallizes in the monoclinic P2_1 space group. The structure is three-dimensional. V4+ is bonded to six O2- atoms to form VO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of V–O bond distances ranging from 1.87–2.02 Å. There are four inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent VO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 43–47°. There is two shorter (1.51 Å) and two longer (1.59 Å) P–O bond length. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent VO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 41–47°. There is two shorter (1.51 Å) and two longer (1.59 Å) P–O bond length. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one VO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedral tilt angles are 36°. There are a spread of P–O bond distances ranging from 1.46–1.64 Å. In the fourth P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one VO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedral tilt angles are 44°. There are a spread of P–O bond distances ranging from 1.46–1.65 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two P5+ atoms. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two P5+ atoms. In the fourth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the fifth O2- site, O2- is bonded in a single-bond geometry to one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V4+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V4+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V4+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V4+ and one P5+ atom. In the tenth O2- site, O2- is bonded in a bent 150 degrees geometry to one V4+ and one P5+ atom. In the eleventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V4+ and one P5+ atom. In the twelfth O2- site, O2- is bonded in a single-bond geometry to one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(PO3)4 by Materials Project

V(PO3)4 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. V4+ is bonded to six O2- atoms to form VO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of V–O bond distances ranging from 1.89–2.02 Å. There are two inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent VO6 octahedra and corners with two equivalent PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 30–47°. There are a spread of P–O bond distances ranging from 1.50–1.60 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share a cornercorner with one VO6 octahedra and corners with two equivalent PO4 tetrahedra. The corner-sharing octahedral tilt angles are 44°. There are a spread of P–O bond distances ranging from 1.45–1.64 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 150 degrees geometry to one V4+ and one P5+ atom. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V4+ and one P5+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the fourth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V4+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms. In the sixth O2- site, O2- is bonded in a single-bond geometry to one P5+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(FeSe2)2 by Materials Project

V(FeSe2)2 crystallizes in the triclinic P1 space group. The structure is three-dimensional. V2+ is bonded in a 6-coordinate geometry to six Se2- atoms. There are a spread of V–Se bond distances ranging from 2.42–2.77 Å. There are two inequivalent Fe3+ sites. In the first Fe3+ site, Fe3+ is bonded in a 6-coordinate geometry to six Se2- atoms. There are a spread of Fe–Se bond distances ranging from 2.41–2.88 Å. In the second Fe3+ site, Fe3+ is bonded in a 4-coordinate geometry to four Se2- atoms. There are a spread of Fe–Se bond distances ranging from 2.33–2.43 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 4-coordinate geometry to one V2+ and three Fe3+ atoms. In the second Se2- site, Se2- is bonded in a 4-coordinate geometry to two equivalent V2+ and two Fe3+ atoms. In the third Se2- site, Se2- is bonded in a 4-coordinate geometry to one V2+ and three Fe3+ atoms. In the fourth Se2- site, Se2- is bonded in a 4-coordinate geometry to two equivalent V2+ and two Fe3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(CO3)2 by Materials Project

V(CO3)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. V4+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.89–2.01 Å. C4+ is bonded in a trigonal planar geometry to three O2- atoms. There are a spread of C–O bond distances ranging from 1.27–1.31 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V4+ and one C4+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one V4+ and one C4+ atom. In the third O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V4+ and one C4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(TeO3)4 by Materials Project

V(TeO3)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. V4+ is bonded to six O2- atoms to form distorted VO6 octahedra that share edges with three TeO6 octahedra. There are a spread of V–O bond distances ranging from 1.87–2.20 Å. There are four inequivalent Te5+ sites. In the first Te5+ site, Te5+ is bonded to six O2- atoms to form TeO6 octahedra that share an edgeedge with one VO6 octahedra. There are a spread of Te–O bond distances ranging from 1.90–2.03 Å. In the second Te5+ site, Te5+ is bonded to six O2- atoms to form TeO6 octahedra that share edges with two equivalent VO6 octahedra. There are a spread of Te–O bond distances ranging from 1.93–1.99 Å. In the third Te5+ site, Te5+ is bonded in a 4-coordinate geometry to six O2- atoms. There are a spread of Te–O bond distances ranging from 1.91–2.80 Å. In the fourth Te5+ site, Te5+ is bonded in a 5-coordinate geometry to five O2- atoms. There are a spread of Te–O bond distances ranging from 1.95–2.67 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted water-like geometry to one V4+ and two Te5+ atoms. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Te5+ atoms. In the third O2- site, O2- is bonded in a bent 150 degrees geometry to two Te5+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one V4+ and two Te5+ atoms. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Te5+ atoms. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to two Te5+ atoms. In the seventh O2- site, O2- is bonded in a water-like geometry to one V4+ and one Te5+ atom. In the eighth O2- site, O2- is bonded in a 2-coordinate geometry to one V4+ and two Te5+ atoms. In the ninth O2- site, O2- is bonded in a distorted T-shaped geometry to one V4+ and two Te5+ atoms. In the tenth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Te5+ atoms. In the eleventh O2- site, O2- is bonded in a distorted water-like geometry to one V4+ and two Te5+ atoms. In the twelfth O2- site, O2- is bonded in a bent 120 degrees geometry to two Te5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(CO3)2 by Materials Project

V(CO3)2 crystallizes in the monoclinic C2/c space group. The structure is three-dimensional. V4+ is bonded in an octahedral geometry to six O2- atoms. There are a spread of V–O bond distances ranging from 1.89–1.99 Å. C4+ is bonded in a trigonal planar geometry to three O2- atoms. There is two shorter (1.27 Å) and one longer (1.32 Å) C–O bond length. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V4+ and one C4+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to one V4+ and one C4+ atom. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V4+ and one C4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(PO3)3 by Materials Project

V(PO3)3 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. V3+ is bonded to six O2- atoms to form VO6 octahedra that share corners with six PO4 tetrahedra. There are a spread of V–O bond distances ranging from 2.01–2.14 Å. There are three inequivalent P5+ sites. In the first P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent VO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 53–56°. There are a spread of P–O bond distances ranging from 1.50–1.64 Å. In the second P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent VO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 45–48°. There are a spread of P–O bond distances ranging from 1.51–1.61 Å. In the third P5+ site, P5+ is bonded to four O2- atoms to form PO4 tetrahedra that share corners with two equivalent VO6 octahedra and corners with two PO4 tetrahedra. The corner-sharing octahedra tilt angles range from 40–42°. There are a spread of P–O bond distances ranging from 1.50–1.63 Å. There are nine inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the second O2- site, O2- is bonded in a distorted bent 120 degrees geometry to one V3+ and one P5+ atom. In the third O2- site, O2- is bonded in a bent 120 degrees geometry to two P5+ atoms. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to one V3+ and one P5+ atom. In the fifth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V3+ and one P5+ atom. In the sixth O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V3+ and one P5+ atom. In the seventh O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V3+ and one P5+ atom. In the eighth O2- site, O2- is bonded in a bent 120 degrees geometry to one V3+ and one P5+ atom. In the ninth O2- site, O2- is bonded in a bent 150 degrees geometry to two P5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(SbO3)4 by Materials Project

V(SbO3)4 crystallizes in the triclinic P1 space group. The structure is three-dimensional. V4+ is bonded to six O2- atoms to form distorted VO6 octahedra that share corners with three SbO6 octahedra, edges with three SbO6 octahedra, and a faceface with one SbO6 octahedra. The corner-sharing octahedra tilt angles range from 52–62°. There are a spread of V–O bond distances ranging from 1.82–2.08 Å. There are four inequivalent Sb5+ sites. In the first Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with six SbO6 octahedra and an edgeedge with one VO6 octahedra. The corner-sharing octahedra tilt angles range from 34–49°. There are a spread of Sb–O bond distances ranging from 1.93–2.23 Å. In the second Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with six SbO6 octahedra and edges with two equivalent VO6 octahedra. The corner-sharing octahedra tilt angles range from 38–52°. There are a spread of Sb–O bond distances ranging from 1.93–2.11 Å. In the third Sb5+ site, Sb5+ is bonded to six O2- atoms to form distorted SbO6 octahedra that share a cornercorner with one VO6 octahedra, corners with six SbO6 octahedra, and a faceface with one VO6 octahedra. The corner-sharing octahedra tilt angles range from 34–52°. There are a spread of Sb–O bond distances ranging from 1.93–2.20 Å. In the fourth Sb5+ site, Sb5+ is bonded to six O2- atoms to form SbO6 octahedra that share corners with two equivalent VO6 octahedra and corners with six SbO6 octahedra. The corner-sharing octahedra tilt angles range from 35–62°. There are a spread of Sb–O bond distances ranging from 1.94–2.16 Å. There are twelve inequivalent O2- sites. In the first O2- site, O2- is bonded in a distorted T-shaped geometry to one V4+ and two Sb5+ atoms. In the second O2- site, O2- is bonded in a bent 120 degrees geometry to two Sb5+ atoms. In the third O2- site, O2- is bonded in a distorted bent 150 degrees geometry to two Sb5+ atoms. In the fourth O2- site, O2- is bonded in a distorted trigonal planar geometry to one V4+ and two Sb5+ atoms. In the fifth O2- site, O2- is bonded in a bent 150 degrees geometry to two Sb5+ atoms. In the sixth O2- site, O2- is bonded in a distorted bent 120 degrees geometry to two Sb5+ atoms. In the seventh O2- site, O2- is bonded in a distorted trigonal planar geometry to one V4+ and two Sb5+ atoms. In the eighth O2- site, O2- is bonded in a 3-coordinate geometry to one V4+ and two Sb5+ atoms. In the ninth O2- site, O2- is bonded in a distorted T-shaped geometry to one V4+ and two Sb5+ atoms. In the tenth O2- site, O2- is bonded in a bent 150 degrees geometry to two Sb5+ atoms. In the eleventh O2- site, O2- is bonded in a T-shaped geometry to one V4+ and two Sb5+ atoms. In the twelfth O2- site, O2- is bonded in a bent 150 degrees geometry to two Sb5+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(GeO3)2 by Materials Project

V(GeO3)2 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. V4+ is bonded to six O2- atoms to form distorted VO6 octahedra that share corners with six GeO4 tetrahedra and edges with two equivalent VO6 octahedra. There are a spread of V–O bond distances ranging from 1.81–2.16 Å. There are two inequivalent Ge4+ sites. In the first Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with three equivalent VO6 octahedra and corners with two equivalent GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 45–58°. There are a spread of Ge–O bond distances ranging from 1.75–1.81 Å. In the second Ge4+ site, Ge4+ is bonded to four O2- atoms to form GeO4 tetrahedra that share corners with three equivalent VO6 octahedra and corners with two equivalent GeO4 tetrahedra. The corner-sharing octahedra tilt angles range from 28–61°. There are a spread of Ge–O bond distances ranging from 1.76–1.78 Å. There are six inequivalent O2- sites. In the first O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent Ge4+ atoms. In the second O2- site, O2- is bonded in a distorted bent 150 degrees geometry to one V4+ and one Ge4+ atom. In the third O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent V4+ and one Ge4+ atom. In the fourth O2- site, O2- is bonded in a bent 120 degrees geometry to two equivalent Ge4+ atoms. In the fifth O2- site, O2- is bonded in a distorted trigonal planar geometry to two equivalent V4+ and one Ge4+ atom. In the sixth O2- site, O2- is bonded in a bent 150 degrees geometry to one V4+ and one Ge4+ atom.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(ZnN)2 by Materials Project

V(ZnN)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. V2+ is bonded in a distorted T-shaped geometry to three N3- atoms. There are a spread of V–N bond distances ranging from 1.79–1.99 Å. There are two inequivalent Zn2+ sites. In the first Zn2+ site, Zn2+ is bonded to five N3- atoms to form distorted ZnN5 square pyramids that share corners with two equivalent ZnN5 square pyramids, corners with two equivalent ZnN4 trigonal pyramids, edges with three equivalent ZnN5 square pyramids, and edges with four equivalent ZnN4 trigonal pyramids. There are a spread of Zn–N bond distances ranging from 2.08–2.57 Å. In the second Zn2+ site, Zn2+ is bonded to four N3- atoms to form ZnN4 trigonal pyramids that share corners with two equivalent ZnN5 square pyramids, corners with two equivalent ZnN4 trigonal pyramids, edges with four equivalent ZnN5 square pyramids, and an edgeedge with one ZnN4 trigonal pyramid. There are a spread of Zn–N bond distances ranging from 2.12–2.31 Å. There are two inequivalent N3- sites. In the first N3- site, N3- is bonded to one V2+ and five Zn2+ atoms to form a mixture of distorted corner and edge-sharing NVZn5 octahedra. The corner-sharing octahedra tilt angles range from 13–18°. In the second N3- site, N3- is bonded to two equivalent V2+ and four Zn2+ atoms to form a mixture of distorted corner and edge-sharing NV2Zn4 octahedra. The corner-sharing octahedra tilt angles range from 15–21°.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(CrTe2)2 by Materials Project

V(CrTe2)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. V2+ is bonded to six Te2- atoms to form VTe6 octahedra that share corners with twelve equivalent CrTe6 octahedra, edges with two equivalent VTe6 octahedra, and faces with two equivalent CrTe6 octahedra. The corner-sharing octahedra tilt angles range from 50–52°. There are two shorter (2.77 Å) and four longer (2.79 Å) V–Te bond lengths. Cr3+ is bonded to six Te2- atoms to form CrTe6 octahedra that share corners with six equivalent VTe6 octahedra, edges with six equivalent CrTe6 octahedra, and a faceface with one VTe6 octahedra. The corner-sharing octahedra tilt angles range from 50–52°. There are a spread of Cr–Te bond distances ranging from 2.72–2.85 Å. There are two inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 5-coordinate geometry to two equivalent V2+ and three equivalent Cr3+ atoms. In the second Te2- site, Te2- is bonded in a rectangular see-saw-like geometry to one V2+ and three equivalent Cr3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(CoSe2)2 by Materials Project

V(CoSe2)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. V4+ is bonded to six Se2- atoms to form VSe6 octahedra that share corners with twelve equivalent CoSe6 octahedra, edges with two equivalent VSe6 octahedra, and faces with two equivalent CoSe6 octahedra. The corner-sharing octahedra tilt angles range from 50–54°. There are two shorter (2.52 Å) and four longer (2.53 Å) V–Se bond lengths. Co2+ is bonded to six Se2- atoms to form CoSe6 octahedra that share corners with six equivalent VSe6 octahedra, edges with six equivalent CoSe6 octahedra, and a faceface with one VSe6 octahedra. The corner-sharing octahedra tilt angles range from 50–54°. There are a spread of Co–Se bond distances ranging from 2.35–2.49 Å. There are two inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to two equivalent V4+ and three equivalent Co2+ atoms. In the second Se2- site, Se2- is bonded in a distorted rectangular see-saw-like geometry to one V4+ and three equivalent Co2+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(CrS2)2 by Materials Project

V(CrS2)2 crystallizes in the monoclinic C2/m space group. The structure is three-dimensional. V2+ is bonded to six S2- atoms to form VS6 octahedra that share corners with twelve equivalent CrS6 octahedra, edges with two equivalent VS6 octahedra, and faces with two equivalent CrS6 octahedra. The corner-sharing octahedra tilt angles range from 49–51°. There are two shorter (2.41 Å) and four longer (2.45 Å) V–S bond lengths. Cr3+ is bonded to six S2- atoms to form CrS6 octahedra that share corners with six equivalent VS6 octahedra, edges with six equivalent CrS6 octahedra, and a faceface with one VS6 octahedra. The corner-sharing octahedra tilt angles range from 49–51°. There are a spread of Cr–S bond distances ranging from 2.36–2.47 Å. There are two inequivalent S2- sites. In the first S2- site, S2- is bonded to two equivalent V2+ and three equivalent Cr3+ atoms to form a mixture of distorted corner and edge-sharing SV2Cr3 trigonal bipyramids. In the second S2- site, S2- is bonded in a rectangular see-saw-like geometry to one V2+ and three equivalent Cr3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(CrS2)2 by Materials Project

V(CrS2)2 crystallizes in the monoclinic Cm space group. The structure is three-dimensional. V2+ is bonded to six S2- atoms to form VS6 octahedra that share corners with six equivalent CrS6 octahedra, edges with two equivalent VS6 octahedra, edges with four equivalent CrS6 octahedra, and a faceface with one CrS6 octahedra. The corner-sharing octahedra tilt angles range from 52–54°. There are a spread of V–S bond distances ranging from 2.34–2.56 Å. There are two inequivalent Cr3+ sites. In the first Cr3+ site, Cr3+ is bonded to six S2- atoms to form CrS6 octahedra that share corners with six equivalent CrS6 octahedra, edges with two equivalent CrS6 octahedra, edges with four equivalent VS6 octahedra, and a faceface with one CrS6 octahedra. The corner-sharing octahedra tilt angles range from 50–56°. There are a spread of Cr–S bond distances ranging from 2.30–2.52 Å. In the second Cr3+ site, Cr3+ is bonded to six S2- atoms to form CrS6 octahedra that share corners with six equivalent VS6 octahedra, corners with six equivalent CrS6 octahedra, edges with two equivalent CrS6 octahedra, a faceface with one VS6 octahedra, and a faceface with one CrS6 octahedra. The corner-sharing octahedra tilt angles range from 50–56°. There are a spread of Cr–S bond distances ranging from 2.39–2.47 Å. There are four inequivalent S2- sites. In the first S2- site, S2- is bonded in a 5-coordinate geometry to one V2+ and four Cr3+ atoms. In the second S2- site, S2- is bonded in a 5-coordinate geometry to two equivalent V2+ and three Cr3+ atoms. In the third S2- site, S2- is bonded in a 4-coordinate geometry to one V2+ and three Cr3+ atoms. In the fourth S2- site, S2- is bonded in a 4-coordinate geometry to two equivalent V2+ and two Cr3+ atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V(Mo3Se4)2 by Materials Project

V(Mo3Se4)2 crystallizes in the triclinic P-1 space group. The structure is three-dimensional. V4+ is bonded in a body-centered cubic geometry to eight Se2- atoms. There are a spread of V–Se bond distances ranging from 2.56–3.12 Å. There are three inequivalent Mo2+ sites. In the first Mo2+ site, Mo2+ is bonded to five Se2- atoms to form a mixture of edge and corner-sharing MoSe5 square pyramids. There are a spread of Mo–Se bond distances ranging from 2.54–2.72 Å. In the second Mo2+ site, Mo2+ is bonded to five Se2- atoms to form a mixture of edge and corner-sharing MoSe5 square pyramids. There are a spread of Mo–Se bond distances ranging from 2.54–2.69 Å. In the third Mo2+ site, Mo2+ is bonded to five Se2- atoms to form a mixture of edge and corner-sharing MoSe5 square pyramids. There are a spread of Mo–Se bond distances ranging from 2.54–2.69 Å. There are four inequivalent Se2- sites. In the first Se2- site, Se2- is bonded in a 5-coordinate geometry to one V4+ and four Mo2+ atoms. In the second Se2- site, Se2- is bonded in a 1-coordinate geometry to one V4+ and three Mo2+ atoms. In the third Se2- site, Se2- is bonded in a 5-coordinate geometry to one V4+ and four Mo2+ atoms. In the fourth Se2- site, Se2- is bonded in a 5-coordinate geometry to one V4+ and four Mo2+ atoms.

36 MATERIALS SCIENCE↗