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首页> 外文期刊>Crystal growth & design >Diversity in the Coordination Polymers of 2-(2-(Pyridin-4/3-yl)vinyl)-1H-benzimidazole and Dicarboxylates/Disulfonates: Photochemical Reactivity and Luminescence Studies
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Diversity in the Coordination Polymers of 2-(2-(Pyridin-4/3-yl)vinyl)-1H-benzimidazole and Dicarboxylates/Disulfonates: Photochemical Reactivity and Luminescence Studies

机译：2-（2-（吡啶-4 / 3-基）乙烯基）-1H-苯并咪唑与二羧酸盐/二磺酸盐的配位聚合物的多样性：光化学反应性和发光研究

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摘要

Solvothermal reactions of Cd(II) or Zn(II) with two unsymmetrical olefinic ligands containing benzimidazole and 3-pyridyl/4-pyridyl moieties and ancillary anionic linkers such as dicarboxylates or disulfonates resulted in the coordination polymers containing diversified geometries. The crystal structure analyses of about eight such CPs reveal that the coordination networks found here include one-dimensional (1D) chains of metal and dicarboxylates/disulfonates with ligands as pendents, two-dimensional corrugated layers containing rectangular grids, and a three-dimensional (3D) coordination network. In two of the complexes, Cd2O2 acts as a secondary building unit (SBU) to form a two-dimensional (2D) layer of metal and dicarboxylates. The interdigitation of the pendent ligands of 1D-chains resulted in the required alignment of double bonds of L-1 or L-2 for photochemical [2 + 2] reaction, in two of the CPs. These CPs upon irradiation were found to undergo solid state [2 + 2] cycloaddition reactions with 100% conversion. All the complexes including irradiated ones were found to exhibit intense emission in solid state luminescence studies.
机译：Cd（II）或Zn（II）与包含苯并咪唑和3-吡啶基/ 4-吡啶基部分的两个不对称烯烃配体以及辅助阴离子接头（如二羧酸盐或二磺酸盐）的溶剂热反应导致配位聚合物包含多种几何形状。对大约8种此类CP的晶体结构分析表明，此处发现的配位网络包括金属和带有配体作为侧基的二羧酸盐/二磺酸盐的一维（1D）链，包含矩形网格的二维波纹层以及三维（ 3D）协调网络。在两个配合物中，Cd2O2充当二级构建单元（SBU），以形成金属和二羧酸盐的二维（2D）层。一维链悬垂配体的相互交叉导致在两个CP中进行光化学[2 + 2]反应所需的L-1或L-2双键对齐。发现这些CP在辐射下经历了固态[2 + 2]环加成反应，转化率为100％。在固态发光研究中，发现所有复合物（包括受辐照的复合物）均显示出强发射。

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