Five new coordination polymers constructed from 1,4-bis(1H-imidazol-1-yl)butane and different carboxylates: Syntheses, structures and photoluminescence
摘要:
Five new coordination polymers, namely [Co-2(bbi)(2)(SO4)(2)] (1), [Zn-2(IA)(2)(bbi)(2)] (2), [Cd(AlP)(bbi)(0.5)]center dot H2O (3), [Zn(PDC)(bbi)] (4) and [Cd(PDC)(bbi)]center dot 2H(2)O (5) (H(2)IA = itaconic acid, H(2)AIP = 5-aminoisophthalic acid, H2PDC = pyridine-2,3-dicarboxylic acid and bbi = 1,4-bis(1H-imidazol-1-yl)butane, have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction. The X-ray crystallographic studies of 1 and 5 reveal 3D threefold interpenetrating diamondoid architectures. Compound 2 displays a diamondoid topology. Compound 3 shows a 3D five-connected (4(2)center dot 6(8)) net. Compound 4 displays an undulating layer structure, where the layers are further stacked by pi-pi interactions to generate a 3D supramolecular architecture. The photoluminescent behaviors of 2-5 have also been investigated. (C) 2013 Elsevier Ltd. All rights reserved.