Organotin(IV) Alkoxides, Siloxides, and Related Stannoxanes. Characterisation and Thermogravimetric Studies.

A series of C,O-chelated organotin(IV) alkoxides, LPhSnOBu (4), LPhSnOMe (6), LSn(OBu) (11), and siloxides LPhSnOSiPh (3), LSn(OSiPh) (10) (L=[2-(CHO)CH]CH), was prepared by salt elimination reactions. They were obtained from the organotin(IV) iodides LPhSnI (1) or LSnI (2) upon reactions with BuOK, MeONa or PhSiONa, respectively, in dry THF or methanol. Under non-inert conditions, compounds 4 and 6 undergo combined hydrolysis and condensation to give the hexaorganodistannoxane (LPhSn)O (5).