Supramolecular assembly of organic bicapped Keggin polyoxometalate |
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Authors: | Zhangang Han Jun Peng Huiyuan Ma Enbo Wang |
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Affiliation: | a Department of Chemistry, Faculty of Chemistry, Northeast Normal University, Changchun 130024, PR Chinab Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, PR China |
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Abstract: | Two novel supramolecular assemblies of organic bicapped Keggin polyoxometalates (pbpy)8H3[PW12O40]·2H2O (1) and (pbpy)4H[PMo12O40(VO)] (2) (pbpy=5-phenyl-2-(4-pyridinyl)pyridine) have been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction. Crystallographic data for compound (1), C128H103N16O42PW12, triclinic, space group : a=13.4759(8) Å, b=14.6395(11) Å, c=16.5743(10) Å, α=95.764(2)°, β=102.166(2)°, γ=92.9870(10)°, Z=1, V=3171.1(4) Å3; for compound (2), C64H49N8O41PMo12V, triclinic, space group : a=11.5377(11) Å, b=12.7552(8) Å, c=14.9599(10) Å, α=72.270(4)°, β=88.916(2)°, γ=67.865(4)°, Z=1, V=1931.0(3) Å3. X-ray analyses show that both 1 and 2 represent rare organic bicapped Keggin structures and are supported by supramolecular interactions to extend into a 3D framework. In particular, the unusual structure feature of compound 2 contains a simultaneously organic and inorganic capped structure. |
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Keywords: | Supramolecular compound Organic capped Keggin structures 5-phenyl-2-(4-pyridinyl)pyridine |
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