The various architectures and properties of a series of coordination polymers tuned by the central metals and auxiliary N-donor ligands

Five new coordination polymers, namely, [Zn(HL)(bib)] sub()n2nH sub(2)O (1), [Zn sub(2)(L)( mu sub(3)-OH) (H sub(2)O)] sub()n2nH sub(2)O (2), [Cd sub(1.5)(L) (H sub(2)O) sub(2)] sub()n0.5nH sub( 2)O (3), [Cd sub(1.5)(L) (CH sub(3)CN)] sub()n0.5nH sub(2)O (4) and [Cd sub(1.5)(L)(bib)(H sub(2)O) sub(2)] sub()nnH sub(2)O (5), (H sub(3)L = biphenyl-2,4',5-tricarboxylic acid, bib = 4,4'-bis(imidazol-1-yl)phenyl) have been synthesized under solvothermal conditions. Complexes 1-5 have been characterized by elemental analysis, IR spectroscopy, powder X-ray diffraction (PXRD) and single-crystal X-ray diffraction analysis. Complex 1 shows a 2D (4,4) network and further forms a 3D supramolecular framework by pi - pi interactions. Complex 2 is a 3D framework based on infinite rod-shaped chains. Complex 3 exhibits a 3D framework with a (3,4,5)-connected {4 super(2).6} sub(2){4 super(2).8 super(4)}{4 super(3).6.8 super(6)} sub(2) topology. Complex 4 features a 3D network with a (4,4,6)-connected {4 super(4).6 super(2) } sub(3){4 super(6).6 super(7).8 super(2)} sub(2) topology. 5 displays a 3D 2-fold interpenetrating (4,4,4)-connected framework with a point symbol of {4.6 super(4).10} sub(2){4.6 super(4).8} sub(2 ){6 super(2).8 super(4)}. Moreover, the thermal stabilities and photoluminescence properties of 1-5 have been investigated.