Di- and triorganotin(IV) carboxylates derived from triorganotin(IV) iodide with mixed organic groups on tin: Cyclic, hexameric triorganotin(IV) carboxylates

The reaction of ethyldiphenyltin(IV) iodide with silver benzoate in ethanol results in the formation of bis(benzoato)ethylphenyltin(IV), EtPhSn[OC(O)C6H5]2 (1), by the cleavage of a phenyl group bound to tin. The reaction of ethyldiphenyltin(IV) iodide with silver acetate provides acetatoethyldiphenyltin(IV), EtPh2SnOC(O)CH3 (2). Similarly, the reaction of diphenylpropyltin(IV) iodide with silver acetate affords acetatodiphenyl-n-propyltin(IV), Ph2PrSnOC(O)CH3 (3). These three complexes were characterized by elemental analysis, mass spectrometry, and infrared spectroscopy (IR), as well as 1H, 13C, and 119Sn NMR. The molecular structures of three complexes were also verified by single-crystal X-ray analyses. The X-ray structures show that 1 adopts a skew-trapezoidal bipyramidal structure, while 2 and 3 are rare, cyclic hexameric structures.