Abstract
The preparation of a number of new organotin(IV) mercaptocarboxylates is reported. The structures of these compounds, a number of which are liquids at room temperature, has been elucidated by means of infrared and 119Sn Mössbauer spectroscopy and by appropriate molecular weight determination, ω-mercaptocarboxylic acids form 2 1 adducts with monoalkyltin(IV) oxides in which one of the ligands retains a free SH group. With dialkyltin(IV) oxides the resultant 1 1 adducts are linear polymers. With bis(trialkyltin(IV) oxides, two different organotin(IV) mercaptocarboxylates are formed: a binuclear monomer in which one metal atom is chelated by both oxygen atoms of the carboxyl group while the other trialkyltin moiety is bonded through the sulfur atom of the thiol group, and a polymeric compound containing both bridging carboxylate ligands and free mercaptan groups.
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