Materials Data on Co5Ge7 by Materials Project
Co5Ge7 crystallizes in the tetragonal I4mm space group. The structure is three-dimensional. there are two inequivalent Co sites. In the first Co site, Co is bonded in a 9-coordinate geometry to five Ge atoms. There are one shorter (2.23 Å) and four longer (2.37 Å) Co–Ge bond lengths. In the second Co site, Co is bonded in a 6-coordinate geometry to six Ge atoms. There are a spread of Co–Ge bond distances ranging from 2.46–2.84 Å. There are three inequivalent Ge sites. In the first Ge site, Ge is bonded in a single-bond geometry to one Co and four equivalent Ge atoms. All Ge–Ge bond lengths are 2.95 Å. In the second Ge site, Ge is bonded in a 10-coordinate geometry to four equivalent Co and six Ge atoms. There are a spread of Ge–Ge bond distances ranging from 2.51–2.93 Å. In the third Ge site, Ge is bonded in a 10-coordinate geometry to five Co and five Ge atoms. Both Ge–Ge bond lengths are 2.72 Å.