DOI: 10.17188/1741783
title: Materials Data on Cu2Bi8Pb3Se3S13 by Materials Project

description: Cu2Pb3Bi8Se3S13 is Orthorhombic Perovskite-derived structured and crystallizes in the monoclinic Cm space group. The structure is three-dimensional. there are two inequivalent Cu1+ sites. In the first Cu1+ site, Cu1+ is bonded to four S2- atoms to form CuS4 tetrahedra that share corners with two equivalent BiSe2S4 octahedra, corners with two equivalent CuS4 tetrahedra, and an edgeedge with one CuS4 tetrahedra. The corner-sharing octahedral tilt angles are 72°. There are a spread of Cu–S bond distances ranging from 2.29–2.43 Å. In the second Cu1+ site, Cu1+ is bonded to four S2- atoms to form CuS4 tetrahedra that share corners with two equivalent BiSe2S4 octahedra, corners with two equivalent CuS4 tetrahedra, and an edgeedge with one CuS4 tetrahedra. The corner-sharing octahedral tilt angles are 71°. There are a spread of Cu–S bond distances ranging from 2.29–2.43 Å. There are three inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded to two equivalent Se2- and four S2- atoms to form PbSe2S4 octahedra that share corners with two BiS6 octahedra, edges with two equivalent PbSe2S4 octahedra, and edges with four BiSeS5 octahedra. The corner-sharing octahedra tilt angles range from 66–70°. Both Pb–Se bond lengths are 3.04 Å. There are a spread of Pb–S bond distances ranging from 2.95–3.02 Å. In the second Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to eight S2- atoms. There are a spread of Pb–S bond distances ranging from 2.86–3.62 Å. In the third Pb2+ site, Pb2+ is bonded in a 5-coordinate geometry to two equivalent Se2- and six S2- atoms. Both Pb–Se bond lengths are 3.06 Å. There are a spread of Pb–S bond distances ranging from 2.85–3.64 Å. There are eight inequivalent Bi3+ sites. In the first Bi3+ site, Bi3+ is bonded to two equivalent Se2- and four S2- atoms to form BiSe2S4 octahedra that share corners with two equivalent BiSe2S4 octahedra, corners with two equivalent CuS4 tetrahedra, and edges with seven BiSe2S4 octahedra. The corner-sharing octahedral tilt angles are 9°. Both Bi–Se bond lengths are 2.84 Å. There are a spread of Bi–S bond distances ranging from 2.62–3.37 Å. In the second Bi3+ site, Bi3+ is bonded to two equivalent Se2- and four S2- atoms to form BiSe2S4 octahedra that share corners with two equivalent BiSeS5 octahedra, corners with two equivalent CuS4 tetrahedra, and edges with seven BiSe2S4 octahedra. The corner-sharing octahedral tilt angles are 8°. Both Bi–Se bond lengths are 2.85 Å. There are a spread of Bi–S bond distances ranging from 2.62–3.40 Å. In the third Bi3+ site, Bi3+ is bonded to one Se2- and five S2- atoms to form BiSeS5 octahedra that share corners with four BiS6 octahedra, edges with two equivalent PbSe2S4 octahedra, and edges with five BiSe2S4 octahedra. The corner-sharing octahedra tilt angles range from 8–56°. The Bi–Se bond length is 3.02 Å. There are a spread of Bi–S bond distances ranging from 2.73–3.03 Å. In the fourth Bi3+ site, Bi3+ is bonded to two Se2- and four S2- atoms to form BiSe2S4 octahedra that share corners with four BiS6 octahedra, edges with two equivalent PbSe2S4 octahedra, and edges with five BiSe2S4 octahedra. The corner-sharing octahedra tilt angles range from 9–55°. There are one shorter (2.90 Å) and one longer (3.03 Å) Bi–Se bond lengths. There are two shorter (2.72 Å) and two longer (3.04 Å) Bi–S bond lengths. In the fifth Bi3+ site, Bi3+ is bonded to six S2- atoms to form BiS6 octahedra that share a cornercorner with one PbSe2S4 octahedra, corners with two equivalent BiSe2S4 octahedra, and edges with four BiS6 octahedra. The corner-sharing octahedra tilt angles range from 55–70°. There are a spread of Bi–S bond distances ranging from 2.69–3.04 Å. In the sixth Bi3+ site, Bi3+ is bonded to six S2- atoms to form BiS6 octahedra that share a cornercorner with one PbSe2S4 octahedra, corners with two equivalent BiSeS5 octahedra, and edges with four BiS6 octahedra. The corner-sharing octahedra tilt angles range from 56–66°. There are a spread of Bi–S bond distances ranging from 2.69–3.07 Å. In the seventh Bi3+ site, Bi3+ is bonded in a 5-coordinate geometry to two equivalent Se2- and five S2- atoms. Both Bi–Se bond lengths are 3.59 Å. There are a spread of Bi–S bond distances ranging from 2.64–3.16 Å. In the eighth Bi3+ site, Bi3+ is bonded in a 7-coordinate geometry to two equivalent Se2- and five S2- atoms. Both Bi–Se bond lengths are 3.57 Å. There are a spread of Bi–S bond distances ranging from 2.64–3.16 Å. There are three inequivalent Se2- sites. In the first Se2- site, Se2- is bonded to four Pb2+ and one Bi3+ atom to form distorted SeBiPb4 square pyramids that share corners with two equivalent SBiPb4 square pyramids, corners with two equivalent SBi3Pb trigonal pyramids, edges with two equivalent SBi5Pb octahedra, an edgeedge with one SBiPb4 square pyramid, edges with two equivalent SeBiPb4 square pyramids, and edges with two equivalent SBi3Pb trigonal pyramids. In the second Se2- site, Se2- is bonded in a 3-coordinate geometry to five Bi3+ atoms. In the third Se2- site, Se2- is bonded in a 3-coordinate geometry to five Bi3+ atoms. There are thirteen inequivalent S2- sites. In the first S2- site, S2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cu1+, two equivalent Pb2+, and one Bi3+ atom. In the second S2- site, S2- is bonded in a distorted trigonal non-coplanar geometry to two equivalent Cu1+, two equivalent Pb2+, and one Bi3+ atom. In the third S2- site, S2- is bonded in a 4-coordinate geometry to two Cu1+, one Pb2+, and two equivalent Bi3+ atoms. In the fourth S2- site, S2- is bonded in a 4-coordinate geometry to two Cu1+, one Pb2+, and two equivalent Bi3+ atoms. In the fifth S2- site, S2- is bonded to one Pb2+ and five Bi3+ atoms to form SBi5Pb octahedra that share corners with two equivalent SBi3Pb trigonal pyramids, edges with four SBi5Pb octahedra, edges with two equivalent SBiPb4 square pyramids, and an edgeedge with one SBi3Pb trigonal pyramid. In the sixth S2- site, S2- is bonded to one Pb2+ and five Bi3+ atoms to form SBi5Pb octahedra that share corners with two equivalent SBi3Pb trigonal pyramids, edges with four SBi5Pb octahedra, edges with two equivalent SeBiPb4 square pyramids, and an edgeedge with one SBi3Pb trigonal pyramid. In the seventh S2- site, S2- is bonded in a 3-coordinate geometry to two equivalent Pb2+ and three Bi3+ atoms. In the eighth S2- site, S2- is bonded in a 3-coordinate geometry to two equivalent Pb2+ and three Bi3+ atoms. In the ninth S2- site, S2- is bonded to one Pb2+ and three Bi3+ atoms to form distorted SBi3Pb trigonal pyramids that share corners with two equivalent SBi5Pb octahedra, corners with two equivalent SeBiPb4 square pyramids, corners with three SBi5 square pyramids, corners with three SBi3Pb trigonal pyramids, an edgeedge with one SBi5Pb octahedra, and edges with two equivalent SBiPb4 square pyramids. The corner-sharing octahedral tilt angles are 7°. In the tenth S2- site, S2- is bonded to one Pb2+ and three Bi3+ atoms to form distorted SBi3Pb trigonal pyramids that share corners with two equivalent SBi5Pb octahedra, corners with five SBi5 square pyramids, corners with three SBi3Pb trigonal pyramids, an edgeedge with one SBi5Pb octahedra, and edges with two equivalent SeBiPb4 square pyramids. The corner-sharing octahedral tilt angles are 7°. In the eleventh S2- site, S2- is bonded to five Bi3+ atoms to form distorted SBi5 square pyramids that share corners with three SBi3Pb trigonal pyramids and edges with four SBi5 square pyramids. In the twelfth S2- site, S2- is bonded to five Bi3+ atoms to form distorted SBi5 square pyramids that share corners with three SBi3Pb trigonal pyramids and edges with four SBi5 square pyramids. In the thirteenth S2- site, S2- is bonded to four Pb2+ and one Bi3+ atom to form distorted SBiPb4 square pyramids that share corners with two equivalent SeBiPb4 square pyramids, corners with two equivalent SBi3Pb trigonal pyramids, edges with two equivalent SBi5Pb octahedra, an edgeedge with one SeBiPb4 square pyramid, edges with two equivalent SBiPb4 square pyramids, and edges with two equivalent SBi3Pb trigonal pyramids.