Synthesis, structure and property of a new inorganic–organic hybrid compound [Cu(phen)₂][Cu(phen)H₂O]₂[Mo₅P₂O₂₃]·3.5H

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• 作者：Lizhou Wu ; Huiyuan Ma ; Zhangang Han ; Chunxiang Li
• 关键词：Polyoxometalates ; Hydrothermal synthesis ; Inorganic– ; organic hybrid material ; Charge transfer ; Electrochemical property
• 刊名：Solid State Sciences
• 出版年：2009
• 出版时间：January 2009
• 年：2009
• 卷：11
• 期：1
• 页码：43-48
• 全文大小：501 K

文摘

A new polyoxomolybdophosphate 1, formulated as [Cu(phen)₂][Cu(phen)H₂O]₂[Mo₅P₂O₂₃]·3.5H₂O (phen = 1,10-phenanthroline) has been synthesized under hydrothermal conditions. Compound 1 crystallizes in the triclinic space group P-1 with a = 12.2429(5) Å, b = 14.3543(5) Å, c = 20.0814(8) Å, α = 80.023 (1)°, β = 74.283 (1)°, γ = 66.452(1)°, V = 3105.8(2) Å³, R₁ = 0.0375, wR₂ = 0.0885, Z = 2 and GOF = 1.009. Compound 1 is constructed from diphosphopentamolybdate clusters coordinated to Cu(II)-phen units, and free water molecules, which are connected to a three-dimensional framework via π–π stacking interactions from the phen ligands. The single-crystal X-ray diffraction, FT-IR, TG-DTA, XPS, EPR and fluorescent spectra for this compound were determined. The electrochemical properties of compound 1 are studied using cyclic voltammogram, the results indicated that the compound 1 shows good electrocatalytic activity to NO₂⁻.