Coordination Chemistry of the Magic Inorganic Building Block {Fe^II[Mo₆P₄O₃₁]₂}: Hydrothermal Synthesis and Crystal Structure of a New Reduced Ferrous Molybdophosphate

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• 作者：Lijuan Zhang ; Yunshan Zhou ; Xianqi Li and Yuhao Li
• 关键词：Ferrous molybdophosphate ; Inorganic building block ; Crystal structure
• 刊名：Journal of Cluster Science
• 出版年：2007
• 出版时间：December, 2007
• 年：2007
• 卷：18
• 期：4
• 页码：921-933
• 全文大小：360.2 KB

文摘

A new reduced ferrous molybdophosphate composite solid of the formula, [(C₁₀H₁₄N₂)H]₄[FeII ₁₀MoV ₂₄(H₂PO₄)₄(HPO₄)₁₂(PO₄)₄(H₂O)₁₆(OH)₁₆O₄₄]¡¤12H₂O, has been synthesized from a reaction mixture of MoO₃, FeSO₄¡¤7H₂O, C₂H₂O₄¡¤2H₂O, nicotine, H₃PO₄, and H₂O under hydrothermal conditions. The crystal data: monoclinic, space group C2/m, a = 24.4349(124), b = 12.9935(66), c = 14.7281(74) ?, β = 104.87(1) ?, V = 4520(4) ?3, Z = 2, R ₁ = 0.0874, wR ₂ = 0.2179. The structure is built from the building blocks of the formula, {FeII[Mo₆P₄O₃₁]₂}, consisting of a network of MO₆ (M = Fe, Mo) octahedral and PO₄ tetrahedral linked through their vertices. The connectivity of the building blocks with two pairs of face-sharing dinuclear Fe(II) clusters of the formula of [FeII ₂(H₂O)₄O₅] on which a phosphate group is hanging gives rise to one-dimensional chains with eight-membered apertures. The remarkable hydrogen bonded interactions between the chains form a unique and interesting framework with three-dimensional intersecting tunnels where the protonated nicotine molecules as structuring templates and crystallization water molecules are situated.