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Unexpected Outcomes of the Oxidation of (Pentafluorophenyl)triphenylphosphanegold(I)
Author(s) -
Hofer Manuel,
Nevado Cristina
Publication year - 2012
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201100956
Subject(s) - chemistry , selectfluor , oxidizing agent , redox , transmetalation , catalysis , stoichiometry , ligand (biochemistry) , medicinal chemistry , silver salts , inorganic chemistry , organic chemistry , biochemistry , receptor
Redox gold(I)/gold(III) catalytic cycles have been proposed as the productive mechanistic manifold in a number of gold mediated C–C and C–X bond forming reactions. These transformations rely on the use of stoichiometric oxidants such as iodonium salts and Selectfluor. We have studied the oxidation of electron deficient [Au(C 6 F 5 )(PPh 3 )] ( 1 ) in the presence of such oxidizing agents. The reaction of 1 with PhI(OAc) 2 afforded cis ‐[Au(C 6 F 5 ) 2 Cl(PPh 3 )] ( 3 ), which seemed to be produced by oxidation of the starting complex followed by a gold(I)/gold(III) transmetalation process or ligand exchange. The reaction of 1 with Selectfluor afforded an unprecedented gold(I)–gold(III) complex [Au(PPh 3 ) 2 ][Au(C 6 F 5 ) 4 ] ( 7 ).