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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 |
| Institution: | 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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