Ni(II), Co(II), and Cu(II) Ternary Complexes Containing 2,4,6‐tris(2‐Pyridyl)‐1,3,5‐triazine as Primary Ligand and Dithiooxamide, Thiosemicarbazide as Secondary Ligands

Abstract

A series of novel dinuclear, mixed‐ligand complexes having the general formula [M₂(tpt)(L)₄]Cl₄ · nH₂O where M=Ni(II), Co(II) or Cu(II); tpt = 2,4,6‐tris(2‐pyridyl)‐1,3,5‐triazine; L = dithiooxamide (dto) or thiosemicarbazide (tsc); n = 2–4, have been synthesized and characterized. The tpt molecule is flexidentate, where it can behave as di‐ or tridentate dinucleating ligand. The coordination mode of tpt to M(II) apparently occurs through the pyridyl and a triazine nitrogen atoms. All the mixed‐ligand complexes are dinuclear with a bridging tpt molecule and having an octahedral structure. The complexes were characterized by chemical analyses, spectral, molar conductance and thermal studies.

Keywords:

• Ternary complexes
• Triazine compounds
• Dithiooxamide and thiosemicarbazide as secondary ligand