Abstract

Upon reaction of the dimolybdenum complex (η 5-C 5Me 5) 2Mo 2(CO) 4 (1) with excess diazomethane (2) both the methylene fragment, CH 2, and its diazo precursor, N 2 CH 2, add to the unsaturated metal-metal triple bond. The thermally labile product of composition (η 5-C 5Me 5) 2Mo 2(CO) 4 (CH 2)(CH 2N 2) (3) was shown by IR, 1H and 13C NMR spectroscopy to reveal two (η 5-C 5Me 5)Mo(CO) 2 moieties held together by CH 2 and CH 2N 2 bridging ligands.

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