Owing to their promise in photocatalysis and optoelectronics, titanium based metal–organic frameworks (MOFs) are one of the most appealing classes of MOFs reported to date. Nevertheless, Ti-MOFs are still very scarce because of their challenging synthesis associated with a poor degree of control of their chemistry and crystallization. This review aims at giving an overview of the recent progress in this field focusing on the most relevant existing titanium coordination compounds as well as their promising photoredox properties. Not only Ti-MOFs but also Ti-oxo-clusters will be discussed and particular interest will be dedicated to highlight the different successful synthetic strategies allowing to overcome the still “unpredictable” reactivity of titanium ions, particularly to afford crystalline porous coordination polymers.

中文翻译：

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钛配位化合物：从离散的金属络合物到金属-有机骨架

由于其在光催化和光电子领域的前景，钛基金属有机框架（MOF）是迄今为止报道的最有吸引力的MOF类之一。然而，由于Ti-MOF的合成具有挑战性，并且对其化学和结晶的控制程度较差，因此仍然非常稀缺。这篇综述旨在概述该领域的最新进展，重点是最相关的现有钛配位化合物及其有前途的光氧化还原性能。不仅将讨论Ti-MOF，而且还将讨论Ti-氧代簇，并将特别关注于突出显示不同的成功合成策略，这些策略可克服钛离子仍然“不可预测”的反应性，特别是提供结晶性多孔配位聚合物。