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Syntheses and Crystal Structures of PbSbO₂Br, PbSbO₂I, and PbBiO₂Br
Pfitzner, Arno
and Pohla, Patrick
(2009)
Syntheses and Crystal Structures of PbSbO₂Br, PbSbO₂I, and PbBiO₂Br.
Zeitschrift für anorganische und allgemeine Chemie (635), pp. 1157-1159.
Date of publication of this fulltext: 23 Dec 2009 11:24
Article
DOI to cite this document: 10.5283/epub.11696
Abstract
Transparent single crystals of PbSbO2Br (green), PbSbO2I, and PbBiO2Br (yellow) were obtained by solid state reactions of stoichionictric amounts of PbO, Pn(2)O(3) (Pn = Sb, Bi) and PnX(3) (X = Br, 1). The crystal structures were determined from single-crystal X-ray data. The title compounds crystallize tetragonally in the space group I4/mmm (No. 139): Lattice constants and refinement values are: ...
Transparent single crystals of PbSbO2Br (green), PbSbO2I, and PbBiO2Br (yellow) were obtained by solid state reactions of stoichionictric amounts of PbO, Pn(2)O(3) (Pn = Sb, Bi) and PnX(3) (X = Br, 1). The crystal structures were determined from single-crystal X-ray data. The title compounds crystallize tetragonally in the space group I4/mmm (No. 139): Lattice constants and refinement values are: PbSbO2Br: a = 3.9463(3), c = 12.849(1) angstrom, V = 200.10(3) angstrom(3), and Z = 2, R-1 = 0.0236, and wR(2) = 0.0513. PbSbO2I: a = 4.0074(3), c = 13.627(2) angstrom, V = 218.84(3) angstrom(3), and Z = 2, R-1 = 0.0244, and wR(2) = 0.0538. PbBiO2Br: a = 3.9818(2), c = 12.766(2) angstrom, V = 202.39(4) angstrom(3), and Z= 2, R-1 = 0.0276, and wR(2) = 0.0715. The compounds are isotypic and crystallize in the anti-ThCr2Si2 structure type with lead and Pn statistically disordered on one common position. In case of Pn = Sb a slight separation of the positions of the cations becomes obvious. Optical bandgaps were detennined by UV/Vis spectroscopy. They are 2.67 eV (PbSbO2Br), 2.48 eV (PbSbO2I), and 2.47 eV (PbBiO2Br).
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| Item type | Article | ||||
| Journal or Publication Title | Zeitschrift für anorganische und allgemeine Chemie | ||||
| Publisher: | WILEY-BLACKWELL | ||||
|---|---|---|---|---|---|
| Place of Publication: | MALDEN | ||||
| Number of Issue or Book Chapter: | 635 | ||||
| Page Range: | pp. 1157-1159 | ||||
| Date | 2009 | ||||
| Institutions | Chemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Arno Pfitzner | ||||
| Identification Number |
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| Keywords | PHASES; Lead; Antimony; Bismuth; Oxide halide | ||||
| Dewey Decimal Classification | 500 Science > 540 Chemistry & allied sciences | ||||
| Status | Published | ||||
| Refereed | Yes, this version has been refereed | ||||
| Created at the University of Regensburg | Unknown | ||||
| URN of the UB Regensburg | urn:nbn:de:bvb:355-epub-116961 | ||||
| Item ID | 11696 |
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