Materials Data on VCrAs2 by Materials Project

Dataset · Sat Jan 12 04:00:00 EST 2019

DOI:https://doi.org/10.17188/1685663· OSTI ID:1685663

VCrAs2 is Modderite-derived structured and crystallizes in the orthorhombic Pmc2_1 space group. The structure is three-dimensional. V3+ is bonded to six As3- atoms to form distorted VAs6 octahedra that share corners with four equivalent VAs6 octahedra, corners with eight equivalent CrAs6 octahedra, edges with two equivalent VAs6 octahedra, edges with four equivalent CrAs6 octahedra, and faces with two equivalent VAs6 octahedra. The corner-sharing octahedra tilt angles range from 43–57°. There are a spread of V–As bond distances ranging from 2.45–2.66 Å. Cr3+ is bonded to six As3- atoms to form distorted CrAs6 octahedra that share corners with four equivalent CrAs6 octahedra, corners with eight equivalent VAs6 octahedra, edges with two equivalent CrAs6 octahedra, edges with four equivalent VAs6 octahedra, and faces with two equivalent CrAs6 octahedra. The corner-sharing octahedra tilt angles range from 43–57°. There are a spread of Cr–As bond distances ranging from 2.43–2.62 Å. There are two inequivalent As3- sites. In the first As3- site, As3- is bonded in a 6-coordinate geometry to two equivalent V3+ and four equivalent Cr3+ atoms. In the second As3- site, As3- is bonded in a 6-coordinate geometry to four equivalent V3+ and two equivalent Cr3+ atoms.

• Research Organization: LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Contributing Organization: The Materials Project; MIT; UC Berkeley; Duke; U Louvain
• DOE Contract Number: AC02-05CH11231
• OSTI ID: 1685663
• Report Number(s): mp-1216397
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
As-Cr-V
VCrAs2
crystal structure