title: Turn helical motifs from pair to single entangled double helixes in a cobalt-vanadate system via introduction of a V-shaped ligand.
abstract: Two novel helical compounds based on polyoxovanadates, [Co(H2O)2V2O6] (1) and [Co(bimb)V2O6] (2) (bimb = 1,3-bis(1-imidazoly)benzene), have been synthesized under identical hydrothermal conditions, providing two structurally different helical motifs due to introduction of a V-shaped bimb ligand in 2. Compound 1 possesses a pair of entanglement double helixes in a 3D inorganic framework, whereas compound 2 shows a single entangled double helix in a 3D inorganic-organic network owing to the influences of steric hindrance of ligands as well as coordination geometries of metal cations. The electrocatalytic and photocatalytic properties of 1 and 2 were also investigated in details.
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.
authors.forename: Shaobin
authors.initials: S
authors.lastname: Li
authors.forename: Wenlong
authors.initials: W
authors.lastname: Sun
authors.forename: Kun
authors.initials: K
authors.lastname: Wang
authors.forename: Huiyuan
authors.initials: H
authors.lastname: Ma
authors.forename: Haijun
authors.initials: H
authors.lastname: Pang
authors.forename: Heng
authors.initials: H
authors.lastname: Liu
authors.forename: Jianxin
authors.initials: J
authors.lastname: Zhang
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D008024:Ligands; D008958:Models, Molecular; D033362:Powder Diffraction; D013056:Spectrophotometry, Ultraviolet; D014638:Vanadates / Q000737:chemistry*
chemical_list: D008024:Ligands; D003035:Cobalt; D014638:Vanadates