Synthesis and characterization of organotin(IV) complexes of p-phenylphenol

The di- and tri-organotin(IV) complexes with the composition R2SnCl2-n(OC6H4Ph-p)(n) and (C6H5)(3)Sn(OC6H4Ph-p) (R = n-C4H9 and Me; n = 1 and 2) have been synthesized by the reaction of dialkyl and triphenyltin(IV) chlorides with p-phenylphenol in the presence of diethylamine in diethylether at room temperature. The complexes have been characterized by their analytical data and IR and H-1 NMR spectra. Thermal behaviour of the complexes has been studied by TGA/ DTA methods. Lewis acid character of the complexes has been established by reacting them with nitrogenous bases such as 2,2'-bipyridyl, 1,10- phenanthroline and 2,2'- dipyridylamine.