Germyl carbene complexes

The reaction of [Mn(CH3)(CO)5] with Na[M(CO)5] (M = Mn, Re) followed by CH3OSO2F gives bimetallic carbene complexes [(CO)sMMn- C(0CH3)(CH3) (C0)4] (90). The reaction of [Mn(CH3)(CO)s] with OH followed by allyl bromide led to the formation of [Mn(i7 -C3H5)(CO)4] and reductive elimination of methane (91) (Scheme 7). The reaction of [Mn(CH3)(CO)5] with germyl lithium species gave anionic compounds [Eq. (28)] which were either isolated as tetraethylammonium salts or al-... 

Reaction with germyllithiutn reagents can yield CO inserted products (92) [Eq. (54)]. Thus methyl rheniumpentacarbonyl reacts with germyl-lithium compounds to give anionic acyl complexes which can be isolated as tetraethylammonium salts or alkylated to give carbene complexes. 

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