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首页> 外文期刊>Zeitschrift fur Anorganische und Allgemeine Chemie >Supramolecular assemblies formed by cooperative metal coordination and dimerization of the N-(2-pyirimidyl)-N '-(3-pyridyl)urea ligand via hydrogen bonding
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Supramolecular assemblies formed by cooperative metal coordination and dimerization of the N-(2-pyirimidyl)-N '-(3-pyridyl)urea ligand via hydrogen bonding

机译:通过氢键合N-(2-吡啶基)-N'-(3-吡啶基)脲配体的协同金属配位和二聚作用形成的超分子组装体

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摘要

The supramolecular structures of two metal complexes, [CoCl2L2] (1) and [ZnCl2L2] (2), where L = N-(2-pyrimidyl)-N'-(3-pyridyl)urea, are reported. The complexes feature zigzag chains formed by the self-dimerization of the ligand via a pair of N-urea-H center dot center dot center dot N-pyrimidyl hydrogen bonds with the R-2(2)(8) motif. Only the pyridyl nitrogen atom coordinates to the metal atom whereas the two pyrimidyl N donors are involved in intra- and intermolecular hydrogen bonding interactions. The coordinated Cl atoms do not form any hydrogen bonds with the urea NH groups. The dimerization of the ligand (K = 90 M-1) was investigated by H-1 NMR spectroscopy.
机译:报道了两种金属配合物的超分子结构,[CoCl2L2](1)和[ZnCl2L2](2),其中L = N-(2-嘧啶基)-N'-(3-吡啶基)脲。配合物的特征是通过配体通过一对具有R-2(2)(8)基序的N-脲-H中心点中心点中心点N-嘧啶氢键进行自我二聚而形成的曲折链。仅吡啶基氮原子与金属原子配位,而两个嘧啶基N供体参与分子内和分子间氢键相互作用。配位的Cl原子不与尿素NH基团形成任何氢键。通过H-1 NMR光谱研究了配体的二聚化(K = 90 M-1)。

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