Materials Data on CuBi3PbS6 by Materials Project

Abstract

CuPbBi3S6 crystallizes in the orthorhombic Pmn2_1 space group. The structure is three-dimensional. Cu1+ is bonded to four S2- atoms to form corner-sharing CuS4 tetrahedra. There are a spread of Cu–S bond distances ranging from 2.28–2.41 Å. Pb2+ is bonded in a 7-coordinate geometry to seven S2- atoms. There are a spread of Pb–S bond distances ranging from 2.78–3.38 Å. There are three inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven S2- atoms. There are a spread of Bi–S bond distances ranging from 2.74–3.47 Å. In the second Bi3+ site, Bi3+ is bonded in a 6-coordinate geometry to six S2- atoms. There are a spread of Bi–S bond distances ranging from 2.68–3.16 Å. In the third Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to seven S2- atoms. There are a spread of Bi–S bond distances ranging from 2.73–3.34 Å. There are six inequivalent S2- sites. In the first S2- site, S2- is bonded in a 6-coordinate geometry to one Cu1+, two equivalent Pb2+, and three Bi3+ atoms. In the second S2- site, S2- is bonded to one Pb2+ and four Bi3+ atoms to form edge-sharing SBi4Pb square pyramids. In the third S2- site, S2- is bonded in a 5-coordinate geometry to five Bi3+ atoms. In the fourth S2- site, S2- is bonded in a 1-coordinate geometry to one Cu1+, two equivalent Pb2+, and three Bi3+ atoms. In the fifth S2- site, S2- is bonded in a 2-coordinate geometry to two equivalent Cu1+, two equivalent Pb2+, and one Bi3+ atom. In the sixth S2- site, S2- is bonded in a 3-coordinate geometry to four Bi3+ atoms.