title: Synthesis and two-dimensional correlation infrared spectroscopy study of an organic-inorganic hybrid compound constructed by [Mo(5)P(2)O(23)] and Cu-imidazole components.
abstract: A novel compound, (Himi)(H(3)O) [Cu(imi)(2)](2)[P(2)Mo(5)O(23)].H(2)O 1 (imi=imidazole), was synthesized by hydrothermal method and characterized by X-ray single analysis, ESR spectrum, one-dimensional (1D) infrared spectroscopy and two-dimensional (2D) correlation infrared spectroscopy under thermal and magnetism perturbation. Crystal data for the compound 1: orthorhombic system, space group Pnma, a = 14.580(3)A, b = 21.073(4)A, c = 16.664(3)A, Z = 4. It consists of the Mo-Cu building-blocks [Cu(imi)(4)](2)[P(2)Mo(5)O(23)](2-), protonated imidazole cations and water molecules. In the Mo-Cu building-blocks, [Mo(5)P(2)O(23)](6-) clusters are linked by {Cu(imi)(4)}(2+) group to form a two-dimension parallelogram griddling structure. From the 2D IR correlation spectroscopy analyses, it is discovered that the intensity changes of Mo=O and P-O band are sensitive to the temperature variation, whereas the Mo-O bond linking to Cu(2+) can be remarkably affected by the magnetism variation. Furthermore, the intensity changes of P-O bands occur prior to that of the Mo=O band during the temperature elevation.
authors.affiliation: Department of Chemistry, Fuzhou University, Fuzhou, Fujian 350002, PR China.
authors.forename: Yiping
authors.initials: Y
authors.lastname: Chen
authors.forename: Hanhui
authors.initials: H
authors.lastname: Zhang
authors.forename: Changcang
authors.initials: C
authors.lastname: Huang
authors.forename: Yanning
authors.initials: Y
authors.lastname: Cao
authors.forename: Ruiqing
authors.initials: R
authors.lastname: Sun
authors.forename: Wenjun
authors.initials: W
authors.lastname: Guo
mesh_terms: D015392:Chemistry, Inorganic / Q000379:methods; D002625:Chemistry, Organic / Q000379:methods; D016000:Cluster Analysis; D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004578:Electron Spin Resonance Spectroscopy / Q000379:methods*; D007093:Imidazoles / Q000737:chemistry*; D008958:Models, Molecular; D008982:Molybdenum / Q000737:chemistry*; D013055:Spectrophotometry, Infrared / Q000379:methods*; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D017973:Tungsten Compounds / Q000737:chemistry; D000099294:Polyoxometalates
chemical_list: D003300:Copper; D007093:Imidazoles; D008982:Molybdenum; D017973:Tungsten Compounds; C102296:polyoxometalate I; D000099294:Polyoxometalates; C029899:imidazole