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Synthesis, Structure, and Bonding of the Cation [{(C 6 H 5 ) 3 PAu} 5 C] ⊕
Author(s) -
Scherbaum Franz,
Grohmann Andreas,
Müller Gerhard,
Schmidbaur Hubert
Publication year - 1989
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198904631
Subject(s) - hypervalent molecule , crystallography , chemistry , ligand (biochemistry) , yield (engineering) , center (category theory) , carbon fibers , bond length , atom (system on chip) , trigonal bipyramidal molecular geometry , salt (chemistry) , crystal structure , materials science , biochemistry , receptor , reagent , composite number , metallurgy , composite material , computer science , embedded system
An AuC 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 CH 2 [B(OMe) 2 ] 2 and [Ph 3 PAuCl] 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.