Materials Data on CaGe2 by Materials Project

CaGe2 crystallizes in the hexagonal P6_3mc space group. The structure is three-dimensional. Ca is bonded in a 7-coordinate geometry to seven Ge atoms. There are a spread of Ca–Ge bond distances ranging from 3.01–3.20 Å. There are two inequivalent Ge sites. In the first Ge site, Ge is bonded in a 7-coordinate geometry to four equivalent Ca and three equivalent Ge atoms. All Ge–Ge bond lengths are 2.58 Å. In the second Ge site, Ge is bonded in a 6-coordinate geometry to three equivalent Ca and three equivalent Ge atoms.