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Pfitzner, Arno ; Pohla, Patrick

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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Details

Item typeArticle
Journal or Publication TitleZeitschrift für anorganische und allgemeine Chemie
Publisher:WILEY-BLACKWELL
Place of Publication:MALDEN
Number of Issue or Book Chapter:635
Page Range:pp. 1157-1159
Date2009
InstitutionsChemistry and Pharmacy > Institut für Anorganische Chemie > Chair Prof. Dr. Arno Pfitzner
Identification Number
ValueType
10.1002/zaac.200900166DOI
KeywordsPHASES; Lead; Antimony; Bismuth; Oxide halide
Dewey Decimal Classification500 Science > 540 Chemistry & allied sciences
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgUnknown
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-116961
Item ID11696

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