Physicochemical characterization of antimony(III), copper(II) and silver(I) complexes with 4-nitroimidazole-derived hydrazones

Complexes [sb(L1 Cl-2] (1), [ Sb(L-2)Cl-2] (2), [Ag(HL)NO3] (3-5, HL = HL1-H2L3), [Cu(HL1)Cl-2] (6), [Cu(L2)Cl] (7) and [Cu(HL3)(2)]center dot 2HCl (8) with 2-acetylpyridine-4-nitroimidazolehydrazone, H2Ac4NO(2)Im (HL1), 2-benzoylpyridine-4-nitroimidazolehydrazone, H2Bz4NO(2)Im (HL2) and 2-formyl-8-hydroxyquinoline-4nitroimidazolehydrazone, H2Q4NO(2)Im (H(2)L3) were obtained and characterized by means of numerous spectroscopic techniques. EPR studies of complexes (6-8) were performed and the crystal structures of (1) and [Cu(HL3)(2)]center dot 2DMF (8a) were determined. (C) 2020 Elsevier B.V. All rights reserved.