Preparation and Post-Assembly Modification of Metallosupramolecular Assemblies from Poly(N-Heterocyclic Carbene) Ligands,Chemical Reviews

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Preparation and Post-Assembly Modification of Metallosupramolecular Assemblies from Poly(N-Heterocyclic Carbene) Ligands
Chemical Reviews ( IF 51.4 ) Pub Date : 2018-07-05 00:00:00 , DOI: 10.1021/acs.chemrev.8b00119
Ming-Ming Gan ₁ , Ji-Quan Liu ₁ , Le Zhang ₁ , Yao-Yu Wang ₁ , F. Ekkehardt Hahn _{1,

2} , Ying-Feng Han ₁

Affiliation

Although the coordination chemistry of N-heterocyclic carbenes (NHCs) with transition metals has been explored for half a century, only in the past ten years has the chemistry of metallosupramolecular assemblies based on poly-NHC ligands been studied more extensively. Remarkable discrete assemblies featuring poly-NHC ligands including two-dimensional metallacycles and three-dimensional metallaprisms/cages have since emerged. These assemblies are mostly obtained starting from various imidazolium or benzimidazolium salts. Driven by the increasing interest in new supramolecular architectures from carbon donor ligands, design, and construction of poly-NHC metal assemblies has become a rapidly growing area of research. The metal–carbene bond length is fixed to approximately 2.0 Å in linear NHC–M–NHC complexes. This allows the use of such complexes bearing olefin-substituted NHC ligands as templates for subsequent photochemical [2 + 2] cycloaddition reactions. The postassembly modification of such assemblies has been actively explored in recent years. In this review, we focus on the synthetic methods, characterization, structural features, and postassembly modifications of metallosupramolecular assemblies obtained from poly-NHC ligands.

中文翻译：

聚（N-杂环碳）配体的金属超分子组装体的制备和组装后改性

尽管已经研究了N-杂环卡宾（NHC）与过渡金属的配位化学已有半个世纪，但仅在过去的十年中，才对基于聚NHC配体的金属超分子组装体的化学进行了更广泛的研究。此后出现了以聚-NHC配体为特征的显着分立组件，其中包括二维金属环和三维金属笼/笼。这些组件主要从各种咪唑盐或苯并咪唑盐开始获得。碳供体配体对新型超分子体系结构的兴趣日益浓厚，聚-NHC金属组装件的设计和构建已成为一个快速发展的研究领域。在线性NHC–M–NHC络合物中，金属–卡宾键的长度固定为约2.0Å。这样可以将带有烯烃取代的NHC配体的配合物用作后续光化学[2 + 2]环加成反应的模板。近年来，已经积极地研究了这种组件的后装配修改。在这篇综述中，我们集中于从聚-NHC配体获得的金属超分子组装体的合成方法，表征，结构特征和组装后修饰。

更新日期：2018-07-05

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