Materials Data on Sr2LiSi3 by Materials Project
LiSr2Si3 crystallizes in the orthorhombic Fddd space group. The structure is three-dimensional. Li is bonded in a trigonal planar geometry to six Sr and three Si atoms. There are four shorter (3.36 Å) and two longer (3.37 Å) Li–Sr bond lengths. There are one shorter (2.54 Å) and two longer (2.56 Å) Li–Si bond lengths. There are two inequivalent Sr sites. In the first Sr site, Sr is bonded to four equivalent Li and eight Si atoms to form a mixture of distorted face and edge-sharing SrLi4Si8 cuboctahedra. There are a spread of Sr–Si bond distances ranging from 3.35–3.42 Å. In the second Sr site, Sr is bonded to two equivalent Li and ten Si atoms to form a mixture of distorted face and edge-sharing SrLi2Si10 cuboctahedra. There are a spread of Sr–Si bond distances ranging from 3.25–3.44 Å. There are two inequivalent Si sites. In the first Si site, Si is bonded in a distorted single-bond geometry to one Li and six Sr atoms. In the second Si site, Si is bonded in a distorted single-bond geometry to one Li and six Sr atoms.