Bis (dimethylsulfoxoniummethylid)-tetracarbonyl-Komplexe der Metalle Chrom, Molybdän und Wolfram / Bis(dimethylsulfoxoniummethylid)tetracarbonyl Complexes of Chromium, Molybdenum and Tungsten

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Abstract
From the photochemical reaction of M(CO)6 (M = Cr, Mo, W) and (CH3)2 -CH2 in ether, yellow solids with the composition [(CH3)2 -CH2]2M(CO)4 are obtained in good yields. [(CH3)2 -CH2]2M(CO)4 (M = Cr, Mo) are also accessible by the displacement of olefin from (norbornadiene) M(CO)4 by excess ylid in ether. Pale insoluble [(CH3)2 -CH2]3Mo(CO)3 is the sole product from the reaction of (cycloheptatriene)Mo(CO)3 and excess ylid in ether.