Some new salicyldeneimine complexes of diorganotin(IV)

Sixteen new dialkyltin derivatives of the type R2SnOC6H4C(R′)NR″O (R = Me, Et, Bu and Ph; R′ = H and Me and R″ = CH2CH2 and CH2CH2CH2) have been synthesised by the reactions of dialkyltin diisopropoxides with the corresponding Schiff bases in refluxing benzene, followed by removal of isopropanol azeotropically. Pentacoordination of tin in these compounds has been proposed on the basis of elemental analyses, molecular weight determinations, IR, PMR and Mössbauer spectral studies.