METALLCARBONYL-SYNTHESEN. XIII. EINE MANGAN-MANGAN-DREIFACHBINDUNG

Article abstract of DOI:10.1016/0022-328X(83)80209-5

Photolysis of the manganese half-sandwich complex (η⁵-C5Me5)Mn(CO)3 (1) in tetrahydrofuran (THF) yields cleanly the solvent complex (η⁵-C5Me5)Mn(CO)2-THF (2).Compound 2 undergoes spontaneous elimination of carbon monoxide to give at ambient temperature in approx. 20 h, or upon removal of solvent in vacuo, the novel dinuclear derivative (η⁵-C5Me5)2Mn2(μ-CO)3 (3).Elemental analyses and infrared and mass as well as the 1H and 13C NMR spectra unequivocally demonstrate this compound to adopt a triply carbonyl-bridged structure containing the first example of a manganese-manganese multiple bond.