The tris-(trimethylsilyltnethyl) compounds of phosphorus, arsenic, antimony and bismuth have been prepared in good yield by the reaction of trimethylsilylmethylmagnesium chloride in tetrahydrofuran solution with the appropriate trihalide. Adducts of these new compounds with methyl, ethyl and trimethylsilylmethyl iodides, bromine, iodine and mercuric chloride are described. Tris-(tritnethylsilylmethy1)-bismuth appears to have no donor properties.
![[(Trimethylsilyl)Methyl]Magnesium Chloride Structure](https://image.chemsrc.com/caspic/432/13170-43-9.png)
