title: The coexistence of interconnected and interweaved double helices in an octamolybdate-based compound: synthesis, structure, and photocatalytic properties.
abstract: By choosing V-shaped ligands, Cu2+ cations and isopolymolybdates as starting materials, a novel double helical compound [Cu(H2O)(bimb)]2[β-Mo8O26] (1) (bimb = 1,3-bis(1-imidazoly)benzene) was hydrothermally synthesized and characterized by elemental analyses, single-crystal X-ray diffraction, powder X-ray diffraction and IR spectroscopy. A structural feature is that compound 1 represents the first example of a helical compound based on polyoxometalates, which possesses an unprecedented helical disposition, namely the coexistence of both interconnected and interweaved double helices in one structure. The photocatalytic properties of compound 1 were also investigated in detail and the result of photocatalytic experiments shows that compound 1 can be used as a stable photocatalyst toward the decomposition of the organic pollutant methylene blue.
authors.affiliation: Key Laboratory of Green Chemical Engineering and Technology of College of Heilongjiang Province, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, China. mahy017@163.com panghj116@163.com.
authors.forename: Wenlong
authors.initials: W
authors.lastname: Sun
authors.forename: Chunjing
authors.initials: C
authors.lastname: Zhang
authors.forename: Huiyuan
authors.initials: H
authors.lastname: Ma
authors.forename: Haijun
authors.initials: H
authors.lastname: Pang
authors.forename: Shaobin
authors.initials: S
authors.lastname: Li
mesh_terms: D002384:Catalysis; D056831:Coordination Complexes / Q000138:chemical synthesis* / Q000737:chemistry; D018360:Crystallography, X-Ray; D005609:Free Radicals / Q000737:chemistry; D008751:Methylene Blue / Q000737:chemistry; D008968:Molecular Conformation; D008982:Molybdenum / Q000737:chemistry*; D010782:Photolysis; D014466:Ultraviolet Rays
chemical_list: D056831:Coordination Complexes; D005609:Free Radicals; C044659:molybdate; D008982:Molybdenum; D008751:Methylene Blue