Materials Data on TlPb2Br5 by Materials Project
TlPb2Br5 crystallizes in the monoclinic P2_1/c space group. The structure is three-dimensional. Tl1+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Tl–Br bond distances ranging from 3.27–3.91 Å. There are two inequivalent Pb2+ sites. In the first Pb2+ site, Pb2+ is bonded in a 8-coordinate geometry to eight Br1- atoms. There are a spread of Pb–Br bond distances ranging from 3.06–3.55 Å. In the second Pb2+ site, Pb2+ is bonded to seven Br1- atoms to form distorted edge-sharing PbBr7 pentagonal bipyramids. There are a spread of Pb–Br bond distances ranging from 3.03–3.28 Å. There are five inequivalent Br1- sites. In the first Br1- site, Br1- is bonded to two equivalent Tl1+ and two equivalent Pb2+ atoms to form distorted BrTl2Pb2 trigonal pyramids that share corners with six BrTl2Pb3 square pyramids, corners with six BrTl2Pb2 trigonal pyramids, edges with three BrTl2Pb3 square pyramids, and an edgeedge with one BrTl2Pb2 trigonal pyramid. In the second Br1- site, Br1- is bonded in a 5-coordinate geometry to two equivalent Tl1+ and three Pb2+ atoms. In the third Br1- site, Br1- is bonded to two equivalent Tl1+ and three Pb2+ atoms to form distorted BrTl2Pb3 square pyramids that share corners with eight BrTl2Pb3 square pyramids, corners with four BrTl2Pb2 trigonal pyramids, an edgeedge with one BrTl2Pb3 square pyramid, edges with four BrPb4 trigonal pyramids, and a faceface with one BrTl2Pb3 square pyramid. In the fourth Br1- site, Br1- is bonded to two equivalent Tl1+ and three Pb2+ atoms to form distorted BrTl2Pb3 square pyramids that share corners with four equivalent BrTl2Pb3 square pyramids, corners with eight BrTl2Pb2 trigonal pyramids, edges with three BrTl2Pb3 square pyramids, edges with two BrTl2Pb2 trigonal pyramids, and a faceface with one BrTl2Pb3 square pyramid. In the fifth Br1- site, Br1- is bonded to four Pb2+ atoms to form distorted BrPb4 trigonal pyramids that share corners with six BrTl2Pb3 square pyramids, corners with six BrTl2Pb2 trigonal pyramids, edges with three BrTl2Pb3 square pyramids, and an edgeedge with one BrPb4 trigonal pyramid.
- Research Organization:
- LBNL Materials Project; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
- Contributing Organization:
- The Materials Project; MIT; UC Berkeley; Duke; U Louvain
- DOE Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1736356
- Report Number(s):
- mp-1208111
- Country of Publication:
- United States
- Language:
- English
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