Materials Data on Hf4NbGe4 by Materials Project

Abstract

Hf4NbGe4 is delta Molybdenum Boride-derived structured and crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are two inequivalent Hf sites. In the first Hf site, Hf is bonded in a 6-coordinate geometry to six Ge atoms. There are a spread of Hf–Ge bond distances ranging from 2.64–2.82 Å. In the second Hf site, Hf is bonded in a 7-coordinate geometry to seven Ge atoms. There are a spread of Hf–Ge bond distances ranging from 2.79–3.11 Å. Nb is bonded in a 6-coordinate geometry to six Ge atoms. There are a spread of Nb–Ge bond distances ranging from 2.69–2.88 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a 8-coordinate geometry to seven Hf and one Nb atom. In the second Ge site, Ge is bonded in a 9-coordinate geometry to six Hf, two equivalent Nb, and one Ge atom. The Ge–Ge bond length is 2.61 Å. In the third Ge site, Ge is bonded in a 9-coordinate geometry to six Hf, two equivalent Nb, and one Ge atom.