title: A three-dimensional hybrid framework based on novel [Co(4)Mo(4)] bimetallic oxide clusters with 3,5-bis(3-pyridyl)-1,2,4-triazole ligands.
abstract: In the title organic-inorganic hybrid complex, poly[[[mu-3,5-bis(3-pyridyl)-1,2,4-triazole]tri-mu(3)-oxido-tetra-mu(2)-oxido-oxidodicobalt(II)dimolybdenum(VI)] monohydrate], {[Co(2)Mo(2)O(8)(C(12)H(9)N(5))].H(2)O}(n), the asymmetric unit is composed of two Co(II) centers, two [Mo(VI)O(4)] tetrahedral units, one neutral 3,5-bis(3-pyridyl)-1,2,4-triazole (BPT) ligand and one solvent water molecule. The cobalt centers both exhibit octahedral [CoO(5)N] coordination environments. Four Co(II) and four Mo(VI) centers are linked by mu(2)-oxide and/or mu(3)-oxide bridges to give an unprecedented bimetallic octanuclear [Co(4)Mo(4)O(22)N(4)] cluster, which can be regarded as the first example of a metal-substituted octamolybdate and exhibits a structure different from those of the eight octamolybdate isomers reported to date. The bimetallic oxide clusters are linked to each other through corner-sharing to give two-dimensional inorganic layers, which are further bridged by trans-BPT ligands to generate a three-dimensional organic-inorganic hybrid architecture with six-connected distorted alpha-Po topology.
authors.affiliation: Key Laboratory of Macromolecular Science of Shaanxi Province, School of Chemistry and Materials Science, Shaanxi Normal University, Xi'an, Shaanxi 710062, People's Republic of China.
authors.forename: Quan Guo
authors.initials: QG
authors.lastname: Zhai
authors.forename: Shu Ni
authors.initials: SN
authors.lastname: Li
authors.forename: Man Cheng
authors.initials: MC
authors.lastname: Hu
authors.forename: Yu Cheng
authors.initials: YC
authors.lastname: Jiang