Based on the N-donor auxiliary ligand effect, four new silver(I) coordination polymers derived from 2,6-naphthalenedicarboxylic acid (H 2 ndc), namely [Ag(L1)-(ndc) 0.5 ] n (1), [Ag(L2)(ndc) 0.5 ] n (2), {[Ag(L3)(ndc) 0.5 ]Á 0.5(H 2 ndc)} n (3), and [Ag(L4)(H 2 O)ÁHndc] n (4) (L1 = 1,3-bis(thiabendazole)butane, L2 = 4,4 0 -bis(pyrazole-1-ylmethyl)-biphenyl, L3 = 1,4-bis(benzimidazole)butane, L4 = 4,4 0 -dipyridylamine), have been synthesized by solvothermal reactions. Complex 1 possesses a 1D infinite loop and chain, which is further extended into a 3D supramolecular framework by p-p stacking interactions. Complex 2 presents an unprecedented 3D (3,4)-connected lim (baa-e-3,4-Imma) topology with the Schläfli symbol of (4.10 2 )2(4 2 .10 4 ). Complex 3 exhibits a 2D three-connected hcb (Shubnikov hexagonal plane) network and the Schläfli symbol is (6 3 ). Complex 4 shows a 1D linear chain, which generates a 2D supramolecular layer via hydrogen bonding interactions. Solid-state properties of 1-4 have also been investigated, which display high thermal stability and intense fluorescent emission in solid state. Moreover, the complexes manifest excellent catalytic activities for the decomposition of Congo red azo dye by hydrogen peroxide in a Fenton-like process.

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Two Mn II coordination polymers based on the flexible bis(benzimidazole) and dicarboxylic acids, namely, [Mn(L1)(bpdc)(H 2 O) 0.5 ] n (1) and [Mn(L2)(Htbi) 2 ] n (2) [L1 = 1,4bis(5,6-dimethylbenzimidazol-1-ylmethyl)benzene, H 2 bpdc = 4,4Ј-biphenyldicarboxylic acid, L2 = 1,4-bis(5,6-dimethylbenzimidazole)butane, H 2 tbi = 5-tert-butyl isophthalic acid] were hydrothermally synthesized and characterized by elemental analysis, IR spectroscopy, as well as single-crystal X-ray diffraction. Both of the complexes crys-* Dr. G. Y. Dong Fax: +86-0315-2592170 E-Mail: tsdgying@126.com [a] College

Four Cu(I) cyanide coordination polymers, namely [Cu(L1)(CN)] n (1), [Cu 2 (L2)(CN) 2 ] n (2), [Cu 2 (L3)-(CN) 2 ] n (3) and [Cu 2 (L4)(CN) 2 ] n (4) (L1 = 4,4 0 -bis(1,2,4-triazolyl-1-yl)-biphenyl, L2 = 1,4-bis(5,6-dimethylbenzimidazole)butane, L3 = 1,3-bis(2-methylbenzimidazole)propane, L4 = 1,5-bis(5,6-dimethylbenzimidazole)pentane), were synthesized and structurally characterized by X-ray singlecrystal diffraction. The cyanide anions in these complexes were generated in situ by cleavage of the C-C bond of acetonitrile under hydrothermal conditions. Complex 1 possesses a 1D infinite ladder-like chain structure, while complexes 2, 3 and 4 exhibit similar 2D (6,3) networks. Both 3 and 4 are further extended into 3D supramolecular frameworks by C-HÁÁÁp stacking interactions. The fluorescence properties of the complexes and their catalytic activities for the degradation of Congo red azo dye in a Fentonlike process were investigated.

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