Materials Data on Hf6Co23 by Materials Project

Abstract

Hf6Co23 crystallizes in the cubic Fm-3m space group. The structure is three-dimensional. Hf is bonded in a 12-coordinate geometry to twelve Co atoms. There are a spread of Hf–Co bond distances ranging from 2.73–2.87 Å. There are four inequivalent Co sites. In the first Co site, Co is bonded in a distorted q6 geometry to three equivalent Hf and nine Co atoms. There are a spread of Co–Co bond distances ranging from 2.32–2.50 Å. In the second Co site, Co is bonded in a body-centered cubic geometry to eight equivalent Co atoms. All Co–Co bond lengths are 2.36 Å. In the third Co site, Co is bonded to four equivalent Hf and eight Co atoms to form a mixture of face and corner-sharing CoHf4Co8 cuboctahedra. All Co–Co bond lengths are 2.49 Å. In the fourth Co site, Co is bonded in a 4-coordinate geometry to three equivalent Hf and ten Co atoms. All Co–Co bond lengths are 2.73 Å.