S. Ng,, V. Das, E. Tiekink
Jul 2, 1991
Citations
0
Influential Citations
17
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract Two dicyclohexylammonium triorganotin 2-sulfobenzoates, [(c-C6H11)2NH2]+ [R3Sn(O2CC6H4-2-SO3)]− (R nBu, Ph), have been prepared by treating bis(tri-n-butyltin)oxide or triphenyltin hydroxide in the appropriate stoichiometry with an equimolar mixture of 2-sulfobenzoic acid and dicyclohexylamine in ethanol. On the basis of Mossbauer and IR spectral evidence, the organotin compounds are shown to be benzoato esters in which the sulfonato group is coordinated intermolecularly to tin, whose geometry is inferred to be trans-R3SnO2 trigonal bipyramidal. In the crystal structure of [(c-C6H11)2NH2][nBu3Sn(O2CC6H4-2-SO3)], the anions are linked to form helical polymeric chains featuring trans-R3SnO2 trigonal bipyramidal Sn geometries. The SnO bond distances within the chain are inequivalent, with the SnO(carboxylato) distance of 2.169(6) A significantly shorter than the SnO(sulfonato) distance of 2.575(6) A; the OSnO angle is 170.7(3)°. The [(c-C6H11)2NH2] cations are linked to the polymeric backbone via hydrogen bonding contacts.