Two organic-inorganic hybrids with Keggin polyanions by Huiyuan Ma, Xiaodan Wang, Fuping Wang, and Lizhou Wu

Crystal Research and Technology

Cryst. Res. Technol. 43, 455 (2008) - Abstract -

Two organic-inorganic hybrids with Keggin polyanions

Huiyuan Ma, Xiaodan Wang*, Fuping Wang, and Lizhou Wu*

Postdoctoral Station of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
*Chemistry Department of Harbin Normal University, Harbin 150025, P. R. China

Keywords	hydrothermal synthesis, hybrid material, polyoxometalate, Keggin structure
PACS	61.66.Fn
DOI	10.1002/crat.200710994

Two new Keggin polyoxometalates [Co(phen)₃]₂[SiW₁₂O₄₀]^.6H₂O (1) and (ppy)₆ H₄SiMo₁₂O₄₀^.0.4H₂O (2) (phen = 1,10´-phenanthroline, ppy = 4-(5-phenylpyridin-2-yl)pyridine) have been synthesized by the hydrothermal method. Single crystal X-ray analysis revealed that compound 1 crystallizes in the monoclinic crystal system with cell parameters of a = 13.344(2) Å, b = 17.191(3) Å, c = 22.002(4) Å, α = 90.00°, β = 99.566(2)°, γ = 90.00°, V = 4977 Å³, Z = 2, and compound 2 crystallizes in the triclinic crystal system with cell parameters of a = 11.297(2) Å, b = 12.341(3) Å, c = 19.354(4) Å, α = 107.60(3)°, β = 95.80(3)°, γ = 94.16(3)°, V = 2543.7(9) Å³, Z = 1. Both 1 and 2 represent organic ligand molecules and inorganic Keggin anions, which are further interconnected to a 3D framework by supramolecular interactions.

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