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All sourcesNASA NTRSDOE OSTI
DOE OSTI2020

Materials Data on VO3 by Materials Project

VO3 crystallizes in the tetragonal P4_2/ncm space group. The structure is one-dimensional and consists of two VO3 ribbons oriented in the (0, 0, 1) direction. V is bonded in a 5-coordinate geometry to five O atoms. There are a spread of V–O bond distances ranging from 1.72–2.21 Å. There are three inequivalent O sites. In the first O site, O is bonded in a 3-coordinate geometry to two equivalent V and one O atom. The O–O bond length is 1.45 Å. In the second O site, O is bonded in a distorted bent 120 degrees geometry to one V and one O atom. In the third O site, O is bonded in a bent 120 degrees geometry to two equivalent V atoms.

36 MATERIALS SCIENCE↗
DOE OSTI2020

Materials Data on VH4NO3 by Materials Project

NH4VO3 crystallizes in the orthorhombic Pbcm space group. The structure is one-dimensional and consists of four ammonium molecules and two VO3 ribbons oriented in the (0, 1, 0) direction. In each VO3 ribbon, V5+ is bonded to four O2- atoms to form corner-sharing VO4 tetrahedra. There are a spread of V–O bond distances ranging from 1.67–1.83 Å. There are three inequivalent O2- sites. In the first O2- site, O2- is bonded in a single-bond geometry to one V5+ atom. In the second O2- site, O2- is bonded in a bent 150 degrees geometry to two equivalent V5+ atoms. In the third O2- site, O2- is bonded in a single-bond geometry to one V5+ atom.

36 MATERIALS SCIENCE↗