| | 1 | Author
| Karin Oldenburg, Arnd Vogler | Requires cookie* | | | Title
| Electronic Spectra and Photochemistry of Tin(II), Lead(II), Antimony(III), and Bismuth(III) Bromide Complexes in Solution  | | | | Abstract
| The electronic spectra o f brom o complexes o f main group metal ions with an s2 electronic configuration (SnBr3~, PbBr3~, PbBr42_, SbBr4~, SbBr63~, BiBr4~, BiBr63~) in acetonitrile show long-wavelength absorption bands which are assigned to metal-centered sp transitions. C om pared to the corresponding chloro complexes the sp bands o f the bromo complexes appear at longer wavelength due to sp/LM C T mixing (LM CT = ligand-to-metal charge transfer). As a result o f this mixing the luminescence which originates from low-energy sp excited states is much weaker than that o f the chloro complexes. M oreover, some o f the bromo complexes (e.g. BiBr4~) undergo a photochemical redox decom position induced by LMCT excitation. | | | |
Reference
| Z. Naturforsch. 48b, 1519—1523 (1993); received July 1 1993 | | | |
Published
| 1993 | | | |
Keywords
| Electronic Spectra, Bromo Complexes, Main Group M etals, Photochemistry | | | |
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| default:Reihe_B/48/ZNB-1993-48b-1519.pdf | | | | Identifier
| ZNB-1993-48b-1519 | | | | Volume
| 48 | |
| 2 | Author
| *. Sonderdruckanforderungen, ProfK. Dr, Dehnicke | Requires cookie* | | | Title
| D ie Kristallstruktur von Bis(bromo | | | | Abstract
| -triphenyl)arsen(V)-hexabromo-tellurat(IV), [Ph3A sB r]2[TeBr6] Crystal Structure o f B is(brom otriphenyl)-arsen ic(V)-h exab rom otellu rate(IV), [Ph3A sB r]2[TeBr6] S oheila Chitsaz, Bernhard N eum üller, Kurt D eh nick e* Yellow-orange single crystals of [Ph3AsBr]2[TeBr6] have been prepared from satu rated solutions of Ph3AsBr2 and TeBr4 in aceto nitrile and characterized by a crystal structure de term ination. Space group R3c, Z = 12, lattice di mensions at -7 0 °C: a = b = 1337.9(2), c = 7953.8(4) pm, R = 0.0691. The structure consists of discrete ions [Ph3A sBr]+ and nearly perfectly octahedral [TeBr6]2-. | | | |
Reference
| Z. Naturforsch. 54b, 1092—1094 (1999); eingegangen am 28. Mai 1999 | | | |
Published
| 1999 | | | |
Keywords
| Arsenic, Tellurium, Bromo Complex, Crystal Structure | | | |
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| default:Reihe_B/54/ZNB-1999-54b-1092_n.pdf | | | | Identifier
| ZNB-1999-54b-1092_n | | | | Volume
| 54 | |
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