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首页> 外文期刊>Crystal growth & design >Functional Coordination Polymers from a Bifunctional Ligand: A Quantitative Transmetalation via Single Crystal to Single Crystal Transformation
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Functional Coordination Polymers from a Bifunctional Ligand: A Quantitative Transmetalation via Single Crystal to Single Crystal Transformation

机译:来自双官能配体的功能配位聚合物:通过单晶与单晶变换的定量传递

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摘要

Three new coordination polymers (CPs) have been synthesized by employing a bifunctional ligand, formulated as {Zn(bppCOO)(2)}(n) (1), {Cu(bppCOO)(2)}(n) (2), and {Co(bppCOO)(HCOO)(H2O)}(n)center dot n1.5H(2)O (3) (where bppCOOH = 2,6-bis(pyrazol-1-yl)pyridine-4-carboxylic acid). Compounds 1 and 3 are obtained under hydrothermal conditions, whereas compound 2 is achieved when compound {Zn(bppCOO)(2)}(n) (1) undergoes a direct metal exchange process with Cu(II)-salt in a quantitative single crystal to single crystal transformation process (solid-liquid interface reaction), retaining its structural integrity. Thus, compounds 1 and 2 are structurally isomorphous. The deprotonated form of bppCOOH ligand links adjacent metal centers by utilizing both carboxylate and tridentate N donors to form one-dimensional coordination polymers. All the compounds 1-3, are well characterized by powder X-ray diffraction, IR spectroscopy, CHNS, and thermogravimetric analyses. Finally, all three compounds are characterized unambiguously by single crystal X-ray diffraction analysis. We have demonstrated that the compound {Co(bppCOO)(HCOO)(H2O)}(n)center dot n1.5H(2)O (3) having Co(H) coordinated water has potential in exhibiting electrocatalytic water oxidation at a neutral pH.
机译:通过使用双官能配体合成了三种新的配位聚合物(CPS),配制为{Zn(BPPCOO)(2)}(1)(1),{Cu(BPPCOO)(2)}(2)(2),和{Co(BPPCOO)(HCOO)(H2O)}(N)中心点N1.5H(2)O(3)(其中BPPOOH = 2,6-双(吡唑-1-基)吡啶-4-羧酸)。在水热条件下获得化合物1和3,而当化合物{Zn(BPPCOO)(2)}(N)(N)(N)(1)在定量单晶中进行直接金属交换方法时,实现了化合物2。单晶变换过程(固液界面反应),保持其结构完整性。因此,化合物1和2在结构上是正常的。通过利用羧酸盐和三齿N施主来形成一维配位聚合物,将邻近金属中心联系的BPPCOOH配体的邻近金属中心。所有化合物1-3都以粉末X射线衍射,红外光谱,CHN和热重分析为特征。最后,所有三种化合物都通过单晶X射线衍射分析毫不含糊地表征。我们已经证明,具有Co(H)配位水的化合物{Co(BPPCOO)(H 2 O)(H 2 O)(2)O(3)具有CO(H)配位水的潜力在中性下表现出电催化水氧化pH。

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