科研之友
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摘要
By using 5,5'-di(pyridin-2-yl)-3,3'-bi(1,2,4-triazole) (2,2'-H(2)dbpt) as a building block, six new coordination complexes: Zn-3(2,2'-Hdbpt)(2)(H2O)Cl-4 (1), {[Zn-2(2,2'-dbpt)Cl-3]center dot Et3NH}(n) (2), {[Cd3Cl3(2,2'-dbpt)(3)]center dot 2H(2)O}(n) (3), {[Cd3I3(2,2'-dbpt)(3)]center dot H2O}(n) (4), {[Cd2Br2(2,2'-dbpt)]center dot H2O}(n) (5), and [Cd2I4(2,2'-H(2)dbpt)](n) (6), based on the M(II)/X (M = Zn, Cd; X = Cl, Br, I) system were generated. 1 and 2 bear a Zn-3 supermolecule and a 1D wave-like chain, respectively. 3 and 4 are isostructural, giving a new 3D architecture with a (4(12).6(3)) topology based on the [Cd-6] ring as a node bridged by the mu(2)-Cl- ion and the mu(2)-I- ion, respectively. 5 is a 2D framework with a (3(2).6(2).7(2)) topology based on the [Cd-4] subunit. 6 reveals a 1D modified trapezoid chain with a (4(2).6) topology based on the trans-bridging 2,2'-H(2)dbpt. Based on the interesting structural results, the solid-state luminescence properties of complexes 1-6 were investigated, which revealed that the emission maximum wavelengths can be tuned in a large range of 403-498 nm. These results indicate that 2,2'-H(2)dbpt is not only an excellent building block to construct coordination complexes with interesting structures but also a good precursor to construct potential photoactive materials.
