✍ Scribed by Reinhart Ahlrichs; Nathan R. M. Crawford; Andreas Eichhöfer; Dieter Fenske; Oliver Hampe; Manfred M. Kappes; Jolanta Olkowska-Oetzel
No coin nor oath required. For personal study only.
The reaction of PhSeSiMe~3~, CuCl, InCl~3~, and Ph~4~AsCl in CH~2~Cl~2~ results in crystals of the structurally closely related, ionic clusters (AsPh~4~)~2~[Cu~6~In~4~Cl~4~(SePh)~16~] and (AsPh~4~)[Cu~7~In~4~(SePh)~20~], with product ratios dependent on the initial PhSeSiMe~3~ concentration. Both molecules display a fused four‐adamantoid structure related to the solid‐state structure of CuInSe~2~. Since the crystallographic analysis for [Cu~7~In~4~(SePh)~20~]^–^ remained ambiguous with respect to the assignment of one of the copper atoms, we performed a high‐resolution mass spectrometric analysis as well as DFT computations to address this problem. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)
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## Abstract The preparation of a family of dinuclear monocyclopentadienyl imidoniobium and ‐tantalum complexes was achieved by two different synthetic routes. The diimido complexes [{M(Cp′)Cl~2~}~2~(μ‐1,__i__‐NC~6~H~4~N)] [Cp′ = η^5^‐C~5~H~4~SiMe~3~, M = Nb, __i__ = 4 (1); Cp′ = η^5^‐C~5~H~4~SiMe~3