Materials Data on La3Te4Br by Materials Project
La3Te4Br crystallizes in the orthorhombic Pnma space group. The structure is three-dimensional. there are three inequivalent La3+ sites. In the first La3+ site, La3+ is bonded in a 8-coordinate geometry to seven Te2- and one Br1- atom. There are a spread of La–Te bond distances ranging from 3.32–3.41 Å. The La–Br bond length is 3.14 Å. In the second La3+ site, La3+ is bonded in a 8-coordinate geometry to seven Te2- and one Br1- atom. There are a spread of La–Te bond distances ranging from 3.31–3.37 Å. The La–Br bond length is 3.16 Å. In the third La3+ site, La3+ is bonded in a 2-coordinate geometry to six Te2- and two equivalent Br1- atoms. There are a spread of La–Te bond distances ranging from 3.29–3.40 Å. Both La–Br bond lengths are 3.08 Å. There are four inequivalent Te2- sites. In the first Te2- site, Te2- is bonded in a 7-coordinate geometry to five La3+ and two equivalent Br1- atoms. Both Te–Br bond lengths are 3.65 Å. In the second Te2- site, Te2- is bonded to five La3+ atoms to form distorted edge-sharing TeLa5 trigonal bipyramids. In the third Te2- site, Te2- is bonded in a 7-coordinate geometry to five La3+ and two equivalent Br1- atoms. Both Te–Br bond lengths are 3.66 Å. In the fourth Te2- site, Te2- is bonded in a 5-coordinate geometry to five La3+ atoms. Br1- is bonded in a 4-coordinate geometry to four La3+ and four Te2- atoms.