[N(PPh3)2]2[{Au3Ag2(C2Ph)6} {Au3Cu2(Cu2Ph)6}]: Co-crystallized pentanuclear bimetallic gold-silver and gold-copper clusters |
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| Authors: | M Sakhawat Hussain Mazhar Ul-Haque Omar M Abu-Salah |
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| Institution: | (1) Department of Chemistry, King Fahd University of Petroleum and Minerals, KFUPM Box 1830, 31201 Dhahran, SM Arabia;(2) Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, 11451 Riyadh, Saudi Arabia;(3) Present address: Chemistry Department, Texas A & M University, College Station, 77843 Texas |
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| Abstract: | The X-ray structural study of the reaction product of equimolar amounts of Au3Cu2(C2Ph)6]. {Au(C2Ph)}
n
], and Ag(C2Ph)}
n
] revealed two bimetallic anionic N(PPh3)2] + Au3Ag2(C2Ph)6]– and N(PPh3)2]+Au3Cu2 (C2 Pg)6] — clusters co-crystallized in one asymmetric unit. Each cluster has trigonal bipyramidal geometry with three gold atoms occupying equatorial planes and two silver or copper atoms in the apical positions. Our earlier conclusion based upon spectroscopic characterization describing the product of be above reaction as trimetallic cluster containing three coinage-metals with an overall composition Au3CuAg(C2Ph)6]–, was erroneous.Presented at the 210th ACS Meeting, August 19–24, 1995, Chicago, Illinois. |
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| Keywords: | Gold-silver-copper pen tall uclear bemtallic cluster |
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