Liu Caiyun, Wang Yifeng
School of Chemistry and Chemical Engineering, Shandong University, Shanda South Road 27, 250100, Jinan, P.R. China.
State Key Laboratory of Crystal Materials, Shandong University, Shanda South Road 27, 250100, Jinan, P.R. China.
Chemistry. 2021 Mar 1;27(13):4270-4282. doi: 10.1002/chem.202003378. Epub 2021 Jan 14.
Titanium oxide clusters (TOCs) have been emerging as a new type of inorganic molecular entities of supramolecular chemistry. Herein, a perspective on the structures and functionalities of TOCs over the past three decades is given and the paramount roles of TOCs in serving supramolecular chemistry are demonstrated. Four types of supramolecular assemblies based on TOCs are reviewed, namely, TOC hosts for ion inclusion, mechanically interlocked molecular systems built from cyclic TOCs, reactivities of surface sites toward ligand exchange, and hierarchical structures of TOCs. The principles and advantages of TOCs toward each application are fully discussed, along with structural analyses. Following this path, more functional TOC-based supramolecular systems may be designed and synthesized in the future, which, in turn, will certainly enhance research into both supramolecular and coordination chemistry of titanium.
氧化钛簇（TOCs）已成为超分子化学中一种新型的无机分子实体。本文对过去三十年来TOCs的结构和功能进行了展望，并展示了TOCs在服务超分子化学方面的重要作用。综述了基于TOCs的四种超分子组装体，即用于离子包合的TOC主体、由环状TOCs构建的机械互锁分子体系、表面位点对配体交换的反应性以及TOCs的层次结构。在进行结构分析的同时，充分讨论了TOCs在每种应用中的原理和优势。沿着这条道路，未来可能会设计和合成更多基于TOCs的功能性超分子体系，这反过来必将加强对钛的超分子化学和配位化学的研究。
