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Five structurally diverse complexes, [Cd 2 (pyip) 2 (suc) 2 ] n ·1.5 n H 2 O ( 1 ), [Zn(pyip)(glu)] n ( 2 ), [Cd(pyip)(glu)] n ( 3 ), [Zn(pyip) 2 (adip) 2 ] n ·2.5 n H 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. |
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