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Use of the CH Acidity of 2,4,4‐Trimethyl‐4,5‐dihydrooxazole to Synthesize Triauriomethanes and Novel Gold Clusters
Author(s) -
Scherbaum Franz,
Huber Brigitte,
Müller Gerhard,
Schmidbaur Hubert
Publication year - 1988
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.198815421
Subject(s) - dication , counterion , cluster (spacecraft) , chemistry , gold cluster , trigonal crystal system , crystallography , ion , medicinal chemistry , stereochemistry , computational chemistry , organic chemistry , crystal structure , density functional theory , computer science , programming language
An Au 8 Icluster with an unusual structure , the dication 1 , is formed in the polyauration of 2,4,4‐trimethyl‐4,5‐dihydrooxazole. The expected dihydrooxazole with a peraurated 2‐methyl group reacts further with excess Ph 3 PAuCl/CsF under Au 1 ‐incorporation to give 1 . The highly aurated C atoms are trigonal‐bipyramidally coordinated. Since the distance between the two central Au atoms is also short (2.811(1) (Å), all the eight Au atoms are components of a cluster. The counterion [Me 3 SiF 2 ] ⊖ was also unexpected.