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Results for “B-Co-V”

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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on VCoB3 by Materials Project

VCoB3 crystallizes in the orthorhombic Cmcm space group. The structure is three-dimensional. V2+ is bonded to twelve B1- atoms to form a mixture of edge and face-sharing VB12 cuboctahedra. There are a spread of V–B bond distances ranging from 2.29–2.37 Å. Co1+ is bonded in a 7-coordinate geometry to seven B1- atoms. There are three shorter (2.05 Å) and four longer (2.16 Å) Co–B bond lengths. There are three inequivalent B1- sites. In the first B1- site, B1- is bonded in a 9-coordinate geometry to four equivalent V2+, two equivalent Co1+, and three B1- atoms. There is one shorter (1.74 Å) and two longer (1.77 Å) B–B bond length. In the second B1- site, B1- is bonded in a 9-coordinate geometry to six equivalent V2+ and three B1- atoms. Both B–B bond lengths are 1.73 Å. In the third B1- site, B1- is bonded in a 9-coordinate geometry to two equivalent V2+, five equivalent Co1+, and two equivalent B1- atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V3(Co10B3)2 by Materials Project

V3(Co10B3)2 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. there are two inequivalent V sites. In the first V site, V is bonded in a cuboctahedral geometry to twelve equivalent Co atoms. All V–Co bond lengths are 2.50 Å. In the second V site, V is bonded in a distorted tetrahedral geometry to four equivalent Co atoms. All V–Co bond lengths are 2.35 Å. There are two inequivalent Co sites. In the first Co site, Co is bonded to one V and three equivalent B atoms to form a mixture of edge and corner-sharing CoVB3 tetrahedra. All Co–B bond lengths are 2.08 Å. In the second Co site, Co is bonded in a 2-coordinate geometry to one V and two equivalent B atoms. Both Co–B bond lengths are 2.07 Å. B is bonded in a 8-coordinate geometry to eight Co atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on V2(Co7B2)3 by Materials Project

V2(Co7B2)3 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. V is bonded in a distorted tetrahedral geometry to four equivalent Co atoms. All V–Co bond lengths are 2.35 Å. There are three inequivalent Co sites. In the first Co site, Co is bonded in a cuboctahedral geometry to twelve equivalent Co atoms. All Co–Co bond lengths are 2.49 Å. In the second Co site, Co is bonded to one V and three equivalent B atoms to form a mixture of edge and corner-sharing CoVB3 tetrahedra. All Co–B bond lengths are 2.08 Å. In the third Co site, Co is bonded in a distorted bent 150 degrees geometry to one Co and two equivalent B atoms. Both Co–B bond lengths are 2.08 Å. B is bonded in a 8-coordinate geometry to eight Co atoms.

36 MATERIALS SCIENCE↗