Six Supramolecular Coordination Complexes Containing Phenoxy Pyrazole-Carboxyl Ligands

Six new complexes, [Co(pzpa-CH3)(4)Cl-2] (1), [M(pzpa-CH2CH3)(2)Cl-2] [M = Mn(2), Ni(3)], [M(cpzpa)Cl](2)[M(H2O)(6)]center dot nH(2)O [M = Co(4) n = 2, Zn(5) n = 4] and [Zn(cpzpa)Cl]center dot H2Cl (6) have been synthesized by hydrothermal reactions of MCl2 center dot 4H(2)O (M = Co, Mn, Ni, Zn) with 2-(1H-pyrazol-3-yl)-phenoxy acetic acid (Hpzpa) and [2-(1-Carboxymethyl-1H-pyrazol-3-yl)phenoxyl acetic acid (H(2)cpzpa). Single-crystal X-ray analyses demonstrate that they are all mononuclear structures. These compounds were characterized by elemental analysis, IR spectroscopy and luminescence. Six new M(II)/pzpa, cpzpa complexes (M = Co, Mn, Ni, Zn) have been synthesized and structurally characterized. The complexes 1-6 feature mononuclear structures.