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Two New Dawson-Type Polyoxometalates: 1D Chain Made by Mono-Dawson Units and 2D Layer Made by Double-Dawson Units

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Abstract

Two new Dawson-Type POTs, (H2en)H2[Cu(en)2][Cu(en)(H2O)3][Cu(en)2 (H2O)](P2W17CuO61)·8H2O (1, en = ethylenediamine) and H10K6(P2W17CuO61)2·34H2O (2), have been synthesized under hydrothermal conditions and characterized by IR spectroscopy, TG, XRD and single-crystal X-ray structural analysis. Crystal data for 1: triclinic, \( {P}{\bar{1}} \), a = 11.6855(26) Å, b = 13.2679(29) Å, c = 28.1540(60) Å, α = 80.4009(75)°, β = 82.5150(79)°, γ = 67.1482(46)°, Z = 2. Crystal data for 2: monoclinic, C2/c, a = 43.5701(99) Å, b = 12.3078(25) Å, c = 29.3742(66) Å, β = 101.3749(21)°, Z = 4. Compound 1 exhibits a 1D chain, in which the [Cu(en)2]2+ cations act as the linkages of mono-{P2W17Cu} units. Compound 2 shows a 2D layer, in which the double-Dawson units are connected by K+ cations.

Graphical Abstract

Two novel {P2W18} type Wells–Dawson-Type polyoxotungstate (H2en)H2[Cu(en)2][Cu(en)(H2O)3] [Cu(en)2(H2O)](P2W17CuO61)·8H2O (1) and H10K6(P2W17CuO61)2·34H2O (2) have been synthesized under hydrothermal conditions and solvent conditions. Compound 1 exhibit a 1D strait chain and Compound 2 exhibits a 2D layer structure based on double [P2W17CuO61]7− polyoxoanion linked by K+ cations.

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Acknowledgments

The authors are thankful for the financial supports from the National Natural Science Fund for Distinguished Young Scholars of China (no. 20725101), the NNSF of China (no. 50872133), the NSF of Fujian Province (nos. E0510030) and the Knowledge Innovation Program from CAS (no. KJCX2.YW.H01).

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Authors and Affiliations

  1. State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian, 350002, China

    Ling Huang, Wei-Hui Fang, Xin-Xiong Li & Guo-Yu Yang

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  1. Ling Huang
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  2. Wei-Hui Fang
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  3. Xin-Xiong Li
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  4. Guo-Yu Yang
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Correspondence to Guo-Yu Yang.

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Huang, L., Fang, WH., Li, XX. et al. Two New Dawson-Type Polyoxometalates: 1D Chain Made by Mono-Dawson Units and 2D Layer Made by Double-Dawson Units. J Clust Sci 22, 141–148 (2011). https://doi.org/10.1007/s10876-011-0366-6

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