Ag(i) and Zn(ii) coordination polymers with a bulky naphthalene-based dicarboxyl tecton and different 4,4′-bipyridyl-like bridging co-ligands: structural regulation and propertiesElectronic supplementary information (ESI) available: Additional structural figures (Figs S1–S14), TG curves (Fig. S16), and PXRD patterns (Fig. S17) for complexes 1–6. Solid state excitation/emission spectra of naphthalene-2,3-dicarboxylic acid (H2ndc) as well as the auxiliary co-ligands 4,4′-bipyridine (4bpy) and trans-4,4′-azobis(pyridine) (abp) at room temperature (Fig. S15). Selected bond distances and angles for 1–6(Tables S1–S6). CCDC reference numbers 783375, 761951, 783376, 761953, 783377, and 761954for 1–6. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c0dt00903b

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]