Three new organotin(IV) structures of general formula RSn(S 2 CNR 0 R 00 ) 2 Cl, where R 0 6 ¼ R 00 , namely MeSn $ [S 2 CN(Me)(Cy)] 2 Cl (1), MeSn[S 2 CN(i-Pr)(CH 2 Ph)] 2 Cl (2) and PhSn[S 2 CN(Et)(i-Pr)] 2 Cl (3) are described. Each structure features tin in a distorted octahedral geometry defined by a CClS 4 donor set as a result of two chelating dithiocarbamate ligands. In all cases the tin-bound carbon and chloride atoms are cis. The shorter Sn-S bond lengths in 3 are correlated with the presence of the relatively more electronegative Sn-bound phenyl substituent. The new structures conform to the structural motif adopted by all other compounds with the formula RSn(S 2 CNR 0 R 00 ) 2 Cl, where R 0 ¼ R 00 , suggesting the unsymmetrical substitution pattern of the dithiocarbamate ligands in the present study does not influence the adoption of this structural motif. The homogeneity in the structural motif notwithstanding, non-systematic variations in geometric parameters are found in these structures indicating an overall influence of crystal packing upon molecular geometry.