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1999 (1)
1993 (1)
1Author    Karin Oldenburg, Arnd VoglerRequires 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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 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-1519.pdf 
 Identifier    ZNB-1993-48b-1519 
 Volume    48 
2Author    *. Sonderdruckanforderungen, ProfK. Dr, DehnickeRequires 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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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1092_n.pdf 
 Identifier    ZNB-1999-54b-1092_n 
 Volume    54