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.