Materials Data on La2InSi2 by Materials Project
La2InSi2 crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. there are two inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 6-coordinate geometry to six Si4- atoms. There are a spread of La–Si bond distances ranging from 3.17–3.27 Å. In the second La3+ site, La3+ is bonded in a distorted hexagonal planar geometry to six Si4- atoms. There are a spread of La–Si bond distances ranging from 3.09–3.20 Å. In2+ is bonded in a T-shaped geometry to three Si4- atoms. There are a spread of In–Si bond distances ranging from 3.01–3.11 Å. There are two inequivalent Si4- sites. In the first Si4- site, Si4- is bonded in a 9-coordinate geometry to six La3+, one In2+, and two Si4- atoms. There are one shorter (2.39 Å) and one longer (2.40 Å) Si–Si bond lengths. In the second Si4- site, Si4- is bonded in a 9-coordinate geometry to six La3+, two equivalent In2+, and one Si4- atom.