Structures, magnetic and thermal properties of polynuclear complexes built by pyridine-2,6-dicarboxylic acid-based multi-dentate ligand

Treatment of a ligand 2,6-di(N,N′-5-ethyl-1,3,4-thia-diazole-2-formamide)pyridine (H2L) with Mn(II) or Cu(II) ions, resulted in two complexes [Mn3(μ3-O)(H2L)(L)2]·2DMF (1) and [Cu2(μ-H2O)(L)2]·DMF (2). In which the ligand H2L acts as a penta-dentate and tetra-dentate coordination mode, respectively. Magnetic properties of 1 and 2 were studied, and the decomposition kinetics of 1 investigated.