Supramolecular Architectures of Four New Transition Metal Complexes with 3-[4-(Carboxymethoxy)phenyl]propanoic Acid and N-[4-(Carboxymethoxy)phenyl]iminodiacetic Acid
Abstract
Four new transition metal complexes: [Cu(Hcppa)2(H2O)2] (1), [Co2(cppa)2(H2O)10] (2), [Co3(cpia)2(H2O)8]·2H2O (3) and [Ni3(cpia)2(H2O)12]·6H2O (4) {H2cppa = 3-(4-(carboxymethoxy)phenyl]propanoic acid; H3cpia = N-[4-(carboxymethoxy)phenyl]iminodiacetic acid} were synthesized and characterized. Complexes 1 and 2 show mononuclear structures, complexes 3 and 4 exhibit dinuclear structures. All complexes extend to 3D supramolecular networks through hydrogen bonds, of which complexes 3 and 4 display microporous structures. In complexes 2–4 the water clusters are trapped by the cooperative association of coordinate interactions as well as hydrogen bonds, forming different 1D metal-water chain structures. Thermal stabilities of complexes 1–4 were discussed.