Syntheses of gold-manganese and gold-rhenium clusters, [(Ph3PAu)3M(CO)4] and [(Ph3PAu)4M(CO)4]+ (M Mn, Re), and the crystal structure of [(Ph3PAu)4Mn(CO)4]BF4
作者:Brian K. Nicholson、Michael I Bruce、Omar bin Shawkataly、Edward R.T. Tiekink
DOI:10.1016/0022-328x(92)80218-m
日期:1992.11
The specific additions of one, three or four Ph3PAu groups to [M(CO)5]- (M = Mn, Re) are described. Thus [M(CO)5]- in THF reacts with [(Ph3PAu)3O]BF4 to give [(Ph3PAu)4Mn(CO)4]BF4. An X-ray crystal structure of the M = Mn example shows the cation to have a trigonal bipyramidal Au4Mn core with the Mn in an equatorial site. The previously known neutral (Ph3PAu)3M(CO)4 clusters are formed by addition of two Ph3PAu groups, using the mixed reagent [(Ph3PAu)3O]BF4/[ppn][Co(CO)4], to Ph3PAuM(CO)5, which itself is readily prepared from [M(CO)5]- and Ph3PAuCl.