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.

Graphical abstractThe reaction of Ph2EtSnI with silver benzoate in ethanol results in the cleavage of a single phenyl group bound to tin, and the formation of PhEtSn[OC(O)C6H5]2 with skew-trapezoidal bipyramidal structure. In contrast, reaction of Ph2EtSnI and Ph2PrSnI with silver acetate leads to the formation of Ph2EtSnOC(O)CH3 and Ph2PrSnOC(O)CH3 with cyclic hexameric structures.Figure optionsDownload full-size imageDownload as PowerPoint slide