Synthesis and spectroscopic studies on dibutyl-, tributyl- and triphenyltin esters of p-methoxy trans-cinnamic acid

Article abstract of DOI:10.1016/0022-328X(88)80294-8

One triphenyl, one tributyl, and two dibutyl esters of p-methoxy trans-cinnamic acid have been synthesized and characterized by IR, NMR (¹H, ¹³C, ¹¹⁹Sn) and ¹¹⁹Sn Moessbauer spectral data. Spectroscopic data suggest that the carboxy-dibutyl distannoxane adopts a ladder structure containing five-coordinate tin atoms, while the dibutyltin bis(cinnamate) ester has a distorted six-coordinate trans-R₂SnO₄ structure. The tributyltin ester is a five-coordinated polymer in the solid state and is a four-coordinate monomer in solution. The corresponding triphenyltin ester is four-coordinate in the solid and in solution.