Syntheses and characterization of five d10 coordination polymers derived from phenanthroline derivative and dicarboxylate mixed ligands

Five structurally diverse complexes, [Cd-2(pyip)(2)(suc)(2)](n)center dot 1.5nH(2)O (1), [Zn(pyip)(glu)](n) (2), [Cd(pyip)(glu)](n) (3), [Zn(pyip)(2)(adip)(2)](n)center dot 2.5nH(2)O (4), [Cd-3(pyip)(2)(adip)(3)](n) (5) (pyip = 2-(pyridin-3-yl)-1H-imidazo[4,5-f][ 1,10] phenan-throline, H(2)suc = succinic acid, H(2)glu = glutaric acid, H(2)adip = adipic acid), have been hydrothermally synthesized. Complexes 1 and 4 are ribbon-like chains, in which pyip ligands attach to the both sides of the chain in pairs. Complex 2 is a one dimensional (1D) wave-like chain, while the pyip ligands attach to only one side of the chain. Complexes 3 and 5 are both two dimensional (2D) networks, in which the dicarboxylate ligands connect the dinuclear or trinuclear Cd-II units into layers with (4, 4) topological network. The structural differences among these complexes show that the organic acids have important influences on the final structures. (C) 2010 Elsevier B.V. All rights reserved.