A three-dimensional Zn-II coordination framework: poly[[mu(2)-(E)-1,2-bis(pyridin-4-yl)ethene][mu(4)-(E)-2,2 '-(diazene-1,2-diyl)dibenzoato][mu(2)-(E)-2,2 '-(diazene-1,2-diyl)dibenzoato]dizinc(II)]

作者：Yu Cai Xia; Zhao Feng; Zhou Min; Zhi Dan Feng; Liu Lei Lei^*

来源：Acta Crystallographica Section C-Crystal Structure Communications, 2014, 70(3): 277-+.

DOI：10.1107/S2053229614001077

• crystal structure
• three-dimensional framework
• metal-organic frameworks
• MOFs
• zinc(II) coordination polymers
• 1,2-bis(pyridin-4-yl)ethene
• 2,2 '-(diazene-1,2-diyl)dibenzoic acid
• photoluminescence properties

In the title coordination polymer, [Zn-2(C14H8N2O4)(2)(C12H10N2)](n), the asymmetric unit contains one Zn-II cation, two halves of 2,2'-(diazene-1,2-diyl)dibenzoate anions (denoted L2-) and half of a 1,2-bis(pyridin-4-yl)ethene ligand (denoted bpe). The three ligands lie across crystallographic inversion centres. Each Zn-II centre is four-coordinated by three O atoms of bridging carboxylate groups from three L2- ligands and by one N atom from a bpe ligand, forming a tetrahedral coordination geometry. Two Zn-II atoms are bridged by two carboxylate groups of L2- ligands, generating a [Zn-2(CO2)(2)] ring. Each loop serves as a fourfold node, which links its four equivalent nodes via the sharing of four L2- ligands to form a two-dimensional [Zn2L4](n) net. These nets are separated by bpe ligands acting as spacers, producing a three-dimensional framework with a 4(6)6(4) topology. Powder X-ray diffraction and solid-state photoluminescence were also measured.

• 出版日期2014-3
• 单位安阳师范学院