Materials Data on Tl3PbCl5 by Materials Project

Abstract

Tl3PbCl5 crystallizes in the orthorhombic P2_12_12_1 space group. The structure is three-dimensional. there are three inequivalent Tl1+ sites. In the first Tl1+ site, Tl1+ is bonded in a 7-coordinate geometry to seven Cl1- atoms. There are a spread of Tl–Cl bond distances ranging from 3.13–3.72 Å. In the second Tl1+ site, Tl1+ is bonded to seven Cl1- atoms to form distorted TlCl7 pentagonal bipyramids that share corners with three equivalent TlCl7 pentagonal bipyramids, corners with four equivalent PbCl7 pentagonal bipyramids, an edgeedge with one PbCl7 pentagonal bipyramid, edges with four TlCl7 pentagonal bipyramids, a faceface with one TlCl7 pentagonal bipyramid, and a faceface with one PbCl7 pentagonal bipyramid. There are a spread of Tl–Cl bond distances ranging from 3.22–3.39 Å. In the third Tl1+ site, Tl1+ is bonded to seven Cl1- atoms to form distorted TlCl7 pentagonal bipyramids that share a cornercorner with one PbCl7 pentagonal bipyramid, corners with three equivalent TlCl7 pentagonal bipyramids, edges with four TlCl7 pentagonal bipyramids, a faceface with one TlCl7 pentagonal bipyramid, and faces with three equivalent PbCl7 pentagonal bipyramids. There are a spread of Tl–Cl bond distances ranging from 3.10–3.39 Å. Pb2+ is bonded to seven Cl1- atoms to form distorted PbCl7 pentagonal bipyramids that share corners with five TlCl7 pentagonal bipyramids, an edgeedge with one TlCl7 pentagonal bipyramid, edges with two equivalent PbCl7 pentagonal bipyramids, and faces with four TlCl7 pentagonal bipyramids. There are a spread of Pb–Cl bond distances ranging from 2.80–3.34 Å. There are five inequivalent Cl1- sites. In the first Cl1- site, Cl1- is bonded to five Tl1+ and one Pb2+ atom to form distorted ClTl5Pb octahedra that share corners with seven ClTl5Pb octahedra, corners with seven ClTl4Pb trigonal bipyramids, edges with four ClTl4Pb trigonal bipyramids, and faces with two equivalent ClTl4Pb2 octahedra. The corner-sharing octahedra tilt angles range from 35–59°. In the second Cl1- site, Cl1- is bonded to four Tl1+ and one Pb2+ atom to form ClTl4Pb trigonal bipyramids that share corners with five ClTl5Pb octahedra, corners with two equivalent ClTl4Pb trigonal bipyramids, edges with three ClTl5Pb octahedra, edges with three equivalent ClTl4Pb trigonal bipyramids, and a faceface with one ClTl4Pb2 octahedra. The corner-sharing octahedra tilt angles range from 36–80°. In the third Cl1- site, Cl1- is bonded to four Tl1+ and one Pb2+ atom to form distorted ClTl4Pb trigonal bipyramids that share corners with six ClTl5Pb octahedra, corners with two equivalent ClTl4Pb trigonal bipyramids, edges with three ClTl5Pb octahedra, edges with three equivalent ClTl4Pb trigonal bipyramids, and a faceface with one ClTl4Pb2 octahedra. The corner-sharing octahedra tilt angles range from 21–43°. In the fourth Cl1- site, Cl1- is bonded to four Tl1+ and two equivalent Pb2+ atoms to form ClTl4Pb2 octahedra that share corners with seven ClTl5Pb octahedra, corners with four ClTl4Pb trigonal bipyramids, edges with two ClTl4Pb trigonal bipyramids, faces with two equivalent ClTl5Pb octahedra, and faces with two ClTl4Pb trigonal bipyramids. The corner-sharing octahedra tilt angles range from 35–59°. In the fifth Cl1- site, Cl1- is bonded in a 6-coordinate geometry to four Tl1+ and two equivalent Pb2+ atoms.