Monosilyl phosphine

Bromosilane can be used to obtain all three silyl phosphines. With lithium aluminium phosphide, monosilyl phosphine is obtained (9.170), while with potassium phosphide either the di or tri derivative can be made (9.171,9.172). 

The silyl phosphines are all colourless, volatile and highly reactive substances. Some reactions of monosilyl phosphine are indicated in Pigure 9.7. 

A series of ferrasilsesquioxanes stabilized by phosphine ligands has been prepared and characterized by Baker et al Reactions of the iron(II) precursor FeCl2(dcpe) (dcpe = bis(dicyclohexylphosphino)ethane) with 2 or the monosilylated precursor (c-C5H9)7Si70g(0SiMe3)(0FI)2 (38) afforded the (dcpe)iron(II)-silsesquioxane... 

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