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首页> 外文期刊>Journal of chemical crystallography >Structural investigation of metal-organic cu(ii) coordination frameworks constructed from n-donor and α, ω-dicarboxylate ligands by one pot synthesis: Zigzag strands, layered networks and its interaction with lattice water molecules
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Structural investigation of metal-organic cu(ii) coordination frameworks constructed from n-donor and α, ω-dicarboxylate ligands by one pot synthesis: Zigzag strands, layered networks and its interaction with lattice water molecules

机译：通过一锅法合成由n-给体和α，ω-二羧酸酯配体构建的金属-有机cu（ii）配位框架的结构研究：之字形链，分层网络及其与晶格水分子的相互作用

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摘要

Two metal organic frameworks involving α, ω-dicarboxylates and 2,2′-bpy, [Cu(2,2Bpy)(μ-adipate-H2)] _n ?2?H _2O 1 and [Cu_2 (2,2′-bpy)2(μ-adipate-H) 2(μ-adipate-H2)]?3H_2O 2 have been synthesized by one pot reaction and structurally characterized. Pentacoordinated Cu(II) zigzag polymeric chain of 1 is composed of linking the adjacent Cu(2,2′-bpy) (H_2O) units through terminal craboxylate oxygens of two different adipate dianion in cis coordination pattern with the metal center. Both the Complexes were crystallized in triclinic system, P-1 space group with cell parameters a = 6.8948(5), b = 10.7098(7), c = 12.4332(8) ?; α = 82.1120(10), β = 80.4950(10), γ = 72.9560(10)°, V = 861.87(10) ?~3 for 1, a = 9.5058(6), b = 9.9341(7), c = 12.6460(8) ?; α = 70.5080(10), β = 73.5740(10), γ = 75.0720(10)°, V = 1062.05(12) ?~3 for 2 respectively. Extensive hydrogen bonding interaction is observed between the lattice water molecules and the coordination network. Compound 2 is a layered architecture, where the neutral framework is constructed by two different adipate anions (in monoanionic and dianionic form) coordinating to the metal center. Interestingly, three water molecules present in the lattice of compound 2 are involved in hydrogen bonding network among themselves, creating a centro-symmetric hexameric water cluster composed of a tetracyclic ring with dangling water molecules attached at alternate positions of the rectangle, which interact with the carboxylate oxygen, thereby extending the hydrogen bonded water network. Graphical Abstract: Two ternary Cu(II) metal-organic coordination networks involving N-donor ligand and adipic acid have been synthesized by one pot reaction. Single crystal investigation revealed that 1 is a zigzag and 2 is a layered network with Cu(II) possessing a distorted square pyramidal geometry. In both the complexes, intricate hydrogen bonding interaction exists between the lattice water molecules with the coordination framework. However, in complex 2, a new topology of hexameric water cluster residing between the adjacent layers of the coordination polymeric network involving hydrogen bonding interactions with the carboxylate oxygens has been observed.[Figure not available: see fulltext.]
机译：两种涉及α，ω-二羧酸盐和2,2'-bpy，[Cu（2,2Bpy）（μ-己二酸-H2）] _n？2？H _2O 1和[Cu_2（2,2'-bpy）的金属有机骨架通过一锅反应合成了）2（μ-己二酸酯-H）2（μ-己二酸酯-H）] 3H_2O 2并对其结构进行了表征。五配位的Cu（II）之字形聚合物链由以下组成：相邻的Cu（2,2'-bpy）（H_2O）单元通过两个不同的己二酸二价阴离子与金属中心的末端卡巴氧合氧连接。两种配合物均在三斜晶系中结晶，P-1空间群的细胞参数为a = 6.8948（5），b = 10.7098（7），c = 12.4332（8）？ α= 82.1120（10），β= 80.4950（10），γ= 72.9560（10）°，V = 861.87（10）？〜3对于1，a = 9.5058（6），b = 9.9341（7），c = 12.6460（8）吗？ α= 70.5080（10），β= 73.5740（10），γ= 75.0720（10）°，V = 1062.05（12）α〜3对于2。在晶格水分子和配位网络之间观察到广泛的氢键相互作用。化合物2是层状结构，其中中性骨架是由与金属中心配位的两个不同的己二酸酯（单阴离子和双阴离子形式）构成的。有趣的是，存在于化合物2晶格中的三个水分子相互之间参与氢键网络，从而形成了一个由四环组成的中心对称六聚体水簇，该四环在矩形的交替位置处附着有悬空的水分子，并与该分子相互作用。羧酸氧，从而扩展了氢键水网络。图形摘要：通过一个罐反应，合成了两个涉及N-给体配体和己二酸的三元Cu（II）金属-有机配位网络。单晶研究表明1是曲折形，2是Cu（II）具有扭曲的方形锥体形状的层状网络。在两种配合物中，晶格水分子与配位框架之间都存在复杂的氢键相互作用。然而，在复合物2中，发现了一种六聚体水簇的新拓扑，该拓扑位于配位聚合物网络的相邻层之间，涉及与羧酸氧的氢键相互作用。[未提供附图：全文]

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