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首页> 外文期刊>Crystal growth & design >Disruption of 'coordination polymer' architecture in Cu~(2+) bis-phosphonates and carboxyphosphonates by use of 2,2′-bipyridine as auxiliary ligand: Structural variability and topological analysis
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Disruption of 'coordination polymer' architecture in Cu~(2+) bis-phosphonates and carboxyphosphonates by use of 2,2′-bipyridine as auxiliary ligand: Structural variability and topological analysis

机译：通过使用2,2'-联吡啶作为辅助配体破坏Cu〜（2+）双膦酸酯和羧基膦酸酯中的“配位聚合物”结构：结构变异性和拓扑分析

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摘要

The outcome of a synthesis involving a metal ion and a (poly)phosphonic acid depends on a plethora of variables such as solution pH, reactant molar ratios, nature of the metal ion, number of phosphonate groups, and other "functional" moieties present on the ligand backbone. Products are usually coordination polymers of diverse dimensionality. Here we report that the use of a chelating auxiliary ligand (2,2′-bpy) can "disrupt" the polymeric architecture of the copper phosphonate, causing the isolation of a series of molecular complexes (mononuclear or binuclear) that incorporate both the phosphonate and the 2,2′-bpy ligands. Synthetic details, crystal structures, and intermolecular interactions (π-π stacking and hydrogen bonding) are discussed. The structures of the obtained Cu complexes are extended into 2D or 3D networks via multiple hydrogen bonds involving the molecular units and crystallization water molecules. These H-bonded networks have been classified from the topological viewpoint, revealing diverse topologies that also include their undocumented types.
机译：涉及金属离子和（聚）膦酸的合成结果取决于多种变量，例如溶液的pH值，反应物的摩尔比，金属离子的性质，膦酸酯基团的数量以及存在于其上的其他“官能”部分配体主链。产品通常是各种尺寸的配位聚合物。在这里，我们报告说，使用螯合辅助配体（2,2'-bpy）可以“破坏”膦酸铜的聚合物结构，从而导致一系列结合了膦酸酯的分子复合物（单核或双核）分离和2,2'-bpy配体。讨论了合成细节，晶体结构和分子间相互作用（π-π堆积和氢键）。通过涉及分子单元和结晶水分子的多个氢键，将获得的Cu配合物的结构扩展到2D或3D网络中。这些H键网络已从拓扑角度进行了分类，揭示了多种拓扑，其中还包括未记录的类型。

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