Synthesis and spectroscopic studies of inorganic tin derivatives of amino-acids and their esters

Abstract
The nature of the product obtained on reacting SnCl2 with sulphur-containing amino-acids is shown to depend on the reaction conditions. Eleven new inorganic tin(II) or tin(IV) derivatives of sulphur-containing amino-acids and their esters are reported. Three tin(II) complexes of amino-acids that have exclusively Sn–O bonds have also been prepared. The bonding in these compounds is discussed in terms of their i.r. and l19Sn Mössbauer spectroscopic data. Infrared spectra suggest the presence of co-ordination to Sn by the amino-N atoms.