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A series of six Ag(i) and Zn(ii) coordination polymers, namely, [Ag2(ndc)]∞(1), {[Zn(ndc)(H2O)](H2O)}∞(2), {[Ag2(ndc)(4bpy)2][Ag(4bpy)(H2O)](ClO4)(H2O)2}∞(3), [Zn5(ndc)4(4bpy)2(μ3-OH)2]∞(4), {[Ag(ndc)(abp)][Ag(abp)](H2O)3}∞(5), and {[Zn2(ndc)2(abp)(H2O)2](H2O)2}∞(6), have been prepared by using 2,3-naphthalenedicarboxylic acid (H2ndc), an analogue of 1,2-benzenedicarboxylic acid (H2bdc), and different 4,4′-bipyridyl-like bridging co-ligands 4,4′-bipyridine (4bpy) and trans-4,4′-azobis(pyridine) (abp). The initial complexes 1and 2display the unusual two-dimensional (2-D) five-connected (48.62) and the 2-D three-connected (4.82) coordination networks, respectively. When two comparable rod-like linkers 4bpy and abp (with different N,N′-donor separations of the molecular backbones of ca.7 and 9 Å) are further introduced, two one-dimensional (1-D) complexes 3and 5, a three-dimensional (3-D) coordination framework 4with (43)(43.63)(43.65.82)(44.64.82)(410.65) topology and a 2-D 63layered coordination polymer 6are constructed. A structural comparison of these complexes with those based on the structurally related bdcligand suggests that the extended π-conjugated system of ndcwith different electronic nature and steric bulk play an important role in constructing the supramolecular architectures for 1–6, which are also regulated by different bridging N-donor co-ligands and metal ions. Moreover, complexes 1–6show strong solid-state luminescence emissions at room temperature that mainly originate from the intraligand transitions of ndc. [ABSTRACT FROM AUTHOR]

A series of ZnIIand CdIIcomplexes with a flexible dicarboxylate building block and various heterocyclic co-ligands, formulated as {[Zn2(pda)2(phen)2]·2H2O}n(1), {[Zn(pda)(dpe)]·H2O}n(2), [Zn(pda)(bpp)]n(3), {[Cd2(pda)2(2,2′-bipy)2]·2H2O}n(4), {[Cd(pda)(4,4′-bipy)(H2O)]·H2O}n(5) and {[Cd2(pda)2(bpp)3]·14H2O}n(6) (pda = 1,3-phenylenediacetate, phen = 1,10-phenanthroline, dpe = 1,2-di(4-pyridyl)ethylene, bpp = 1,3-bi(4-pyridyl)propane, 2,2′-bipy = 2,2′-bipyridine, and 4,4′-bipy = 4,4′-bipyridine), have been synthesized and structurally characterized. In 1, the (H2O)8clusters interlink the cyclic coordination dimers to give a 3D network through hydrogen bonding. Both 2and 3feature 2D corrugated (4,4) layers, which are of 2-fold interpenetrating for 3. In 4, the dimeric CdIIsubunits are connected by the 1,3-pda ligands to generate a rampart-shaped 1D chain motif. As for 5, the [Cd(pda)]2rings are connected by the paired 4,4′-bipy ligands to afford a tube-shaped 1D motif. In contrast to 1–5, complex 6displays a 3D diamond network and, interestingly, the T5(0)A(0)A(2) water tapes are found to locate in the channels of this 3-D array. A structural comparison of these complexes demonstrates that the characteristics of auxiliary ligands (from chelating to bridging) play a key role in governing the coordination motifs as well as the 3-D supramolecular lattices. Solid-state properties such as photoluminescence and thermal stability of 1–6have also been studied. [ABSTRACT FROM AUTHOR]