Materials Data on SrNi3Ge2 by Materials Project
SrNi3Ge2 crystallizes in the hexagonal P6_3/mmc space group. The structure is three-dimensional. Sr is bonded in a 6-coordinate geometry to two equivalent Ni and six equivalent Ge atoms. Both Sr–Ni bond lengths are 3.55 Å. All Sr–Ge bond lengths are 3.20 Å. There are two inequivalent Ni sites. In the first Ni site, Ni is bonded in a 12-coordinate geometry to two equivalent Sr, six equivalent Ni, and six equivalent Ge atoms. All Ni–Ni bond lengths are 2.56 Å. All Ni–Ge bond lengths are 2.72 Å. In the second Ni site, Ni is bonded in a 4-coordinate geometry to three equivalent Ni and four equivalent Ge atoms. There are three shorter (2.37 Å) and one longer (2.39 Å) Ni–Ge bond lengths. Ge is bonded in a 10-coordinate geometry to three equivalent Sr and seven Ni atoms.