On the existence of PbBi{sub 3}PO{sub 8}
- Department of Chemical Engineering, Texas Materials Institute, University of Texas at Austin, 1 University Station C0400, Austin, TX 78712 (United States)
- Department of Chemistry, University of Texas at Austin, Austin, TX 78712 (United States)
- R.L. Harlow and Co., Inc., Silver Springs, MD 20906 (United States)
- XOR, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439 (United States)
The title compound crystallizes in the tetragonal system, a = 11.733(2) A, c = 15.587(3) A, I4 mm, Z = 10. Data were collected at the Argonne National Laboratory synchrotron source at {lambda} = 0.15359 A. Least squares refinement on F {sup 2} converged to R1 = 0.039. The oxygen coordination polyhedra around Bi and Pb display the distortions typical of 6s{sup 2} lone-pair atoms. One Bi is disordered. Bi-O bonds vary from 2.08(2) to 2.96(1) A. One Pb is in cubic coordination to oxygen and the second Pb is bonded to six oxygen atoms that form a rectangular pyramid and a seventh oxygen is off one of the rectangular faces of the pyramid. Pb-O bonds vary from 2.303(6) to 2.804(17) A. Of the two crystallographically independent P one is in a single tetrahedral coordination while the second is at the center of two disordered tetrahedra. Units of OM{sub 4} tetrahedra, M = Bi/Pb, articulate into a three-dimensional framework by corner and edge sharing that is strengthened by corner sharing with PO{sub 4} moieties.
- OSTI ID:
- 20891576
- Journal Information:
- Materials Research Bulletin, Vol. 40, Issue 8; Other Information: DOI: 10.1016/j.materresbull.2005.03.031; PII: S0025-5408(05)00095-4; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
- Country of Publication:
- United States
- Language:
- English
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