COORDINATION-COMPLEXES OF DIMETHYLTIN DICHLORIDE WITH C-NITROSO COMPOUNDS

Coordination complexes of five nitrosoanilines with dimethyltin dichloride have been prepared and studied by C-13, N-15 and Sn-119 solid state NMR spectroscopy and by Mossbauer spectroscopy. The C-13 resonances of the CH3-Sn groups, the Sn-119 resonances and the Mossbauer quadrupole splitting values permit assignment of the two classes of coordination complexes. The C-NO resonances decrease on coordination. The N-15 resonances demonstrate that coordination is accompanied by an enhancement of the quinonoid contribution in the ligand itself.