Coordination Behaviour of Thallium(I) towards Triazene-1-Oxides

Abstract

Results of coordination behaviour of thallium(I) towards variedly
substituted monobasic bidentate /tridentate triazene-1-oxide (TH)
are reported. The complexes have also been reacted with dipy /o-phen
to probe the increase in the coordination number of thallium(l)
complexes. The coordination number of thallium(I) is found to be
four as well as six. Thallium(I), though a class (b) acceptor, has
been found to give reasonably stable complexes with O- and N-donor
ligands. The complexes are  insoluble in common organic
solvents, indicating thereby that they are polymeric in nature. It is believed that the polymerisation occurs through  oxygen
leading to linear polymer with four coordination with (TH) and six
coordination is case of mixed ligand complexes with dipy /o-phen
through N-ArCl (o-chlorine).