 Tin(II) bis(trimethylsilyl)amide is prepared from anhydrous tin(II) chloride and is commercially available.It is used to prepare other metal bis(trimethylsilylamide)s via transmetallation.The group 13 and bismuth(III) bis(trimethylsilyl)amides are prepared in the same manner; the aluminium complex may also be prepared by treating strongly basic lithium aluminium hydride with the parent amine