Materials Data on Bi2Se5Cl7 by Materials Project

Abstract

Bi2Cl7(Se)5 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is two-dimensional and consists of forty selenium molecules and two Bi2Cl7 sheets oriented in the (0, 0, 1) direction. In each Bi2Cl7 sheet, there are four inequivalent Bi+2.50+ sites. In the first Bi+2.50+ site, Bi+2.50+ is bonded in a 7-coordinate geometry to seven Cl1- atoms. There are a spread of Bi–Cl bond distances ranging from 2.53–3.32 Å. In the second Bi+2.50+ site, Bi+2.50+ is bonded in a 7-coordinate geometry to seven Cl1- atoms. There are a spread of Bi–Cl bond distances ranging from 2.56–3.20 Å. In the third Bi+2.50+ site, Bi+2.50+ is bonded in a 6-coordinate geometry to six Cl1- atoms. There are a spread of Bi–Cl bond distances ranging from 2.56–3.13 Å. In the fourth Bi+2.50+ site, Bi+2.50+ is bonded in a 7-coordinate geometry to seven Cl1- atoms. There are a spread of Bi–Cl bond distances ranging from 2.52–3.40 Å. There are fourteen inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded in a distorted water-like geometry to two Bi+2.50+ atoms. In the second Cl1- site, Cl1- is bonded in a distorted trigonal non-coplanar geometry to three Bi+2.50+ atoms. In the third Cl1- site, Cl1- is bonded in a single-bond geometry to one Bi+2.50+ atom. In the fourth Cl1- site, Cl1- is bonded in a single-bond geometry to one Bi+2.50+ atom. In the fifth Cl1- site, Cl1- is bonded in a distorted water-like geometry to two Bi+2.50+ atoms. In the sixth Cl1- site, Cl1- is bonded in a distorted water-like geometry to two Bi+2.50+ atoms. In the seventh Cl1- site, Cl1- is bonded in a distorted trigonal non-coplanar geometry to three Bi+2.50+ atoms. In the eighth Cl1- site, Cl1- is bonded in a distorted water-like geometry to two Bi+2.50+ atoms. In the ninth Cl1- site, Cl1- is bonded in a distorted water-like geometry to two Bi+2.50+ atoms. In the tenth Cl1- site, Cl1- is bonded in a 3-coordinate geometry to three Bi+2.50+ atoms. In the eleventh Cl1- site, Cl1- is bonded in a single-bond geometry to one Bi+2.50+ atom. In the twelfth Cl1- site, Cl1- is bonded in a single-bond geometry to one Bi+2.50+ atom. In the thirteenth Cl1- site, Cl1- is bonded in a 2-coordinate geometry to three Bi+2.50+ atoms. In the fourteenth Cl1- site, Cl1- is bonded in a single-bond geometry to one Bi+2.50+ atom.