Bis(triphenyltin) succinate and its complex with dimethyl sulfoxide and ethanol, and its complex with hexamethylphosphoramide

Bis(triphenyltin) succinate exists as a centrosymmetric dinuclear molecule, mu-succinato-bis(triphenyltin), [Sn-2-(C4H4O4)(C6H5)(6)], With its Sn atom in tetrahedral coordination. When crystallized from an ethanol solution containing excess dimethyl sulfoxide (DMSO), it yields [mu-succinato-bis(triphenyltin)].[mu-succinato-bis-(triphenyltin). sesqui(dimethyl sulfoxide). hemiethanol], [Sn-4(C4H4O4)(2)(C6H5)(12)(C2H6O)(1/2)(C2H6OS)(3/2)], and when crystallized from an ethanol solution containing excess hexamethylphosphoramide (HMPA), it yields [mu-succinato-bis(triphenyltin)].[mu-succinato-bis(triphenyltin).bis(hexamethylphosphoramide)], [Sn-4(C4H4O4)(2)(C6H5)(12)(C6H18N3OP)(2)]. In the DMSO and HMPA complexes, the [mu-succinato-bis(triphenyltin)] moiety is linked to the [mu-succinato-bis(triphenyltin).bis(donor)] moiety by a carboxylate bridge, giving rise to a linear chain structure of tetranuclear complexes.