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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 |
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| Authors: | Brian K. Nicholson |
| Affiliation: | School of Science and Technology, University of Waikato, Private Bag, Hamilton New Zealand Department of Physical and Inorganic Chemistry, University of Adelaide, GPO Box 498, Adelaide SA5001 Australia |
| Abstract: | 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. |
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