Materials Data on Tb2Si3 by Materials Project

Abstract

Tb2Si3 crystallizes in the orthorhombic Imm2 space group. The structure is three-dimensional. there are two inequivalent Tb sites. In the first Tb site, Tb is bonded in a 10-coordinate geometry to ten Si atoms. There are a spread of Tb–Si bond distances ranging from 2.98–3.13 Å. In the second Tb site, Tb is bonded in a 8-coordinate geometry to eight Si atoms. There are a spread of Tb–Si bond distances ranging from 2.93–3.11 Å. There are three inequivalent Si sites. In the first Si site, Si is bonded in a 9-coordinate geometry to six Tb and three Si atoms. There are one shorter (2.33 Å) and two longer (2.39 Å) Si–Si bond lengths. In the second Si site, Si is bonded in a 8-coordinate geometry to six Tb and two equivalent Si atoms. In the third Si site, Si is bonded in a 7-coordinate geometry to six Tb and one Si atom.