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2-[[(2-hydroxyphenyl)imino]methyl]phenolato(2-)-N,0,0']-2-methoxycarbonylethyltin chloride, CH3OCOCH2CH2SnClL (L = OCeHiCHiNC^O), has been synthesized by the reaction of 2methoxycarbonylethyltin trichloride with N-(2-hydroxyphenyl)salicylaldimine (H2L) in the presence of triethylamine and characterized by means of elemental analysis, IR, *H NMR spectra and X-ray single crystal diffraction. Transesterification reactions of the title compound with ROH proceeded readily. Introduction Since Hutton et al [1] reported the syntheses of 2-Alkoxycarbonylethyltin trichlorides, ROCOCH2CH2SnCl3, the structure and coordination chemistry of these systems have attracted considerable attention [1-10]. The crystal structure determinations [2,3,7-9] and spectral data [1,47,10] of ROCOCH2CH2SnCl3 and their 1:1 adducts with monodentate donors showed that the carbonyl oxygen was coordinated intramolecularly to tin leading to the formation of a fivemember cheating ring. However, the intramolecular coordination can be broken in the 1:2 adducts with monodentate donors and 1:1 adducts with bidentate donors [3-5,10]. To our knowledge, less attention has been devoted to the complexes of ROCOCH2CH2SnCl3 with Schiff bases, particularly with tridentate Schiff base ligands [10]. We report here synthesis, characterization and transesterification reaction of [2-[[(2-hydroxyphenyl)imino]methyl]phenolato(2-)-N,0,0']-2methoxycarbonylethyltin chloride, CH3OCOCH2CH2SnClL (1). The following equations summarize the reactions explored in this study. CH3OCOCH2CH2SnCl3 + H2L > CH3OCOCH2CH2SnClL + 2HC1 CH3OCOCH2CH2SnClL + ROH » ROCOCH2CH2SnClL + CH3OH 1 2 8 R = CH3CH2 2; C1CH2CH2 3; CH3CH2CH2 4; (CH3)2CH 5; CH2=CHCH2 6; CH3(CH2)2CH2 7; (CH3)2CHCH2 8. Experimental Materials N-(2-Hydroxyphenyl)salicylaldimine was prepared by the condensation of salicylaldehyde

SYNTHESIS, STRUCTURE AND TRANSESTERIFICATION OF {2-[2-HYDROXYPHENYLIMINOMETHYL]PHENOLATO(2-)- N,O,O']-2-METH0XYCARBONYLETHYLTIN TRICHLORIDE