Coordination complexes of dimethyltin dichloride with C-nitroso compounds

Coordination complexes of five nitrosoanilines with dimethyltin dichloride have been prepared and studied by ¹³C, ¹⁵N and ¹⁹⁹Sn solid state NMR spectroscopy and by Mössbauer spectroscopy. The ¹³C resonances of the CH3-Sn groups, the ¹⁹⁹Sn resonances and the Mössbauer quadrupole splitting values permit assignment of the two classes of coordination complexes. The C-NO resonances decrease on coordination. The ¹⁵N resonances demonstrate that coordination is accompanied by an enhancement of the quinonoid contribution in the ligand itself. © 1994.