Synthesis, Structure, and Bonding of the Cation [{(C6H5)3PAu}5C]

Synthesis, Structure, and Bonding of the Cation [{(C6H5)3PAu}5C]

An AuC bond order of 0.8 characterizes the pentaauriomethyl cation 1, so that the central carbon atom cannot be regarded as hypervalent. Compound 1 is formed from CH2[B(OMe)2]2 and [Ph3PAuCl] in the presence of CsF as BF 4⊖ salt in 84% yield. The trigonal‐bipyramidal coordination of the carbon cent...

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Veröffentlicht in:Angewandte Chemie International Edition 1989-04, Vol.28 (4), p.463-465
Hauptverfasser: Scherbaum, Franz, Grohmann, Andreas, Müller, Gerhard, Schmidbaur, Hubert
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container_title Angewandte Chemie International Edition
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creator Scherbaum, Franz
Grohmann, Andreas
Müller, Gerhard
Schmidbaur, Hubert
description An AuC bond order of 0.8 characterizes the pentaauriomethyl cation 1, so that the central carbon atom cannot be regarded as hypervalent. Compound 1 is formed from CH2[B(OMe)2]2 and [Ph3PAuCl] in the presence of CsF as BF 4⊖ salt in 84% yield. The trigonal‐bipyramidal coordination of the carbon center is slightly distorted. This may be due to a reduction in energy upon lowering the symmetry or to ligand–ligand repulsion or packing effects.
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