Halides halogenosilanes

Triphenylmethyl halides Halogenosilanes from silanes Partial replacement of Si-hydrogen by Si-halogen... 

The alkyl- or aryl-halogenosilanes are prepared commercially by passing the vapour of an alkyl or an aryl halide over a heated intimate mixture of powdered sihcoii and either copper or silver. 

Most studies of halogenosilanes have been concerned with the methylsilanes (Section ll.C). The data that have been collected for the mixed silicon halides Y4 SiX (26,57) are presented graphically in Fig. 12. In contrast to the methylhalogenosilanes (Me4 SiF is shown in Fig. 12 for comparison), the sagging" pattern, which is apparently... 

Common synthetic pathways to obtain mono-, di-, tri- and tetraalkylsilanes are reactions of the respective halogenosilanes with lithiated alkyl compounds, with alkyl-magnesium halides (Grignard reactions) and with alkyl halides in a Wurtz-Fittig-type reaction, as well as the addition of silanes to alkenes, i.e. hydrosilylation. 

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