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首页> 外文期刊>Crystal growth & design >Structural Systematics and Topological Analysis of Coordination Polymers with Divalent Metals and a Glycine-Derived Tripodal Phosphonocarboxylate
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Structural Systematics and Topological Analysis of Coordination Polymers with Divalent Metals and a Glycine-Derived Tripodal Phosphonocarboxylate

机译：配位聚合物与二价金属和甘氨酸衍生的三脚架膦酸酯的结构体系和拓扑分析

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A novel family of four hybrid metal phosphonate coordination polymers is reported that are constructed from divalent metal ions (Ca, Sr, Ba, and Pb) and BPMGLY (bisphosphonomethylglycine, a phosphonated derivative of glycine). These compounds (and their compositions) are Ca-BPMGLY (CaBPMGLY?H_2O), Sr-BPMGLY (SrBPMGLY?H_2O), Ba-BPMGLY (Ba_(3.5)(BPMGLY)_2?6H_2O), and Pb-BPMGLY (PbBPMGLY?H_2O). They were obtained by hydrothermal reactions in acidic aqueous solutions (pH range 2.3-5.7) and fully characterized by physicochemical methods and structural analysis. Ca-BPMGLY, Sr-BPMGLY, and Pb-BPMGLY have very similar 3D coordination polymer structures, and the latter two are isostructural. In contrast to the Ca, Sr, and Pb analogs, Ba-BPMGLY possesses a different 2D layered network. These four new compounds, together with our previously reported 2D coordination polymer Mg-BPMGLY (MgBPMGLY?2H_2O, Demadis et al. Inorg. Chem. 2012, 51, 7889-7896), were topologically classified revealing (i) the uninodal 3-connected net with the hcb topology in Mg-BPMGLY, (ii) the uninodal 5-connected nets with the bnn and vbj topology in Ca-BPMGLY and Sr-BPMGLY, respectively, and (iii) the very complex topologically unique hexanodal 4,4,6,6,7,8-connected net in Ba-BPMGLY. The vbj topology was also identified in the related Pb-BPMGLY 3D framework. These topological features show that the complexity of BPMGLY-driven 2D and 3D metal-organic networks increases periodically following the Mg < Ca ≤ Sr ? Ba trend.
机译：据报道，由二价金属离子（Ca，Sr，Ba和Pb）和BPMGLY（双膦酰基甲基甘氨酸，甘氨酸的膦酸酯衍生物）构成的新型的四个杂化金属膦酸酯配位聚合物家族。这些化合物（及其组成）是Ca-BPMGLY（CaBPMGLY？H_2O），Sr-BPMGLY（SrBPMGLY？H_2O），Ba-BPMGLY（Ba_（3.5）（BPMGLY）_2？6H_2O）和Pb-BPMGLY（PbBPMGLY？H_2O） ）。它们是通过在酸性水溶液（pH范围为2.3-5.7）中进行水热反应而获得的，并通过理化方法和结构分析进行了全面表征。 Ca-BPMGLY，Sr-BPMGLY和Pb-BPMGLY具有非常相似的3D配位聚合物结构，后两个是同构的。与Ca，Sr和Pb类似物相比，Ba-BPMGLY具有不同的2D分层网络。这四种新化合物以及我们先前报道的2D配位聚合物Mg-BPMGLY（MgBPMGLY？2H_2O，Demadis et al.Inorg.Chem.2012，51，7889-7896）经过拓扑分类，揭示了（i）单链3连接Mg-BPMGLY中具有hcb拓扑的网络，（ii）Ca-BPMGLY和Sr-BPMGLY中具有bnn和vbj拓扑的单节点5连接网络，以及（iii）拓扑非常复杂的六节点4,4， Ba-BPMGLY中有6,6,7,8个连接的网络。在相关的Pb-BPMGLY 3D框架中也确定了vbj拓扑。这些拓扑特征表明，随着Mg

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