SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF DIMERIC DIORGANOTIN(IV) N-2-HYDROXYNAPHTHALIDENE-BETA-AMINO ACID COMPLEXES - X-RAY STRUCTURE OF [ME2SN(OC10H6CH=NCH2CH2COO)]2

Two new compounds with the formula [R2Sn(OC10H6CH=NCH2CH2COO)]2 where R = CH3 or n-C4H9, have been synthesized. The crystal structure of the dimethyltin compound is reported along With H-1, C-13 and IR spectros copic data for both compounds. The centrosymmetric dimethyltin complex exhibits octahedral coordination for each tin atom. The tridentate li gand chelates meridionally via the phenolate oxygen, the imino nitroge n and one carboxylate oxygen atom. Two further trans positions in the tin coordination sphere are taken up by the two methyl groups while th e apical (sixth) position is filled by a shared carboxylate oxygen ato m from the other organotin unit.