Reactions of with Primary and Secondary Silanes

2 Reactions of [MH4(dppe)2] with Primary and Secondary Silanes 

A typical method of formation of a transition metal-silicon bond is the oxidative addition of silane derivatives, involving either Si-H or Si-Si bond cleavage, to a low valent, coordinatively unsaturated transition metal complex. Various kinds of transition metal silyl or silylene complexes have so far been synthesised via this method. However, in contrast to the rich chemistry of the late transition metal complexes with an M-Si bond, a limited number of syntheses of Group 6 metal complexes with an M-Si bond have been reported.  

In expectation of obtaining oxidative addition products of the general formula H- Mo -SiR3, which are readily envisaged from the series of reactions reported, we examined the thermal reactions of tetrahydride 1 with silanes. On reaction of 1 with phenylsilane PhSiH3 in refluxing toluene, an oxidative addition reaction 

3 Some Reactions Involving Trihydrido Complex [M0H3 [Ph2PCH2CH2P(Ph)C6H4-o]2(Ar)Si-P,P,P,P,5/ ] (3) 

Carboxylic acids such as formic, acetic, and benzoic acids reacted with 3a to give corresponding carboxylato complexes 6 in which the carboxylato ligand 

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