Photochemical reactions of the isostructural 17- and 18-electron complexes (η-C5H5)M(Me)PPh3 (M=Co, Ni) |
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| Authors: | Anna Becalska Jeff D Debad Haleh K Sanati and Ross H Hill |
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| Institution: | Department of Chemistry, Simon Fraser University, Burnaby, B.C. V5A 1S6 Canada |
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| Abstract: | The photochemical reactions of the title complexes were studied in air-free benzene solution. In both cases photolysis leads to the production of complexes of the formula (η5-C5H5)M(PPh3)2. Both reactions are the result of the initial loss of a methyl radical from the excited state. The primary photoproduct, (η5-C5H5)MPPh3 (M=CO, Ni), then scavenges neutral ligands from the solution to yield, in the case of PPh3, (η5-C5H5)M(PPh3)2. In the absence of uncoordinated ligand in the reaction solution, the cobalt derivative reacts with the starting material to yield (η5-C5H5)Co(PPh3)2, a methyl radical and (η5-C5H5)Co(solvent)n. |
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