Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans 16, 43007-Tarragona, Spain.
Chem Soc Rev. 2012 Jan 21;41(2):622-31. doi: 10.1039/c1cs15170c. Epub 2011 Aug 12.
Schiff base ligands have long been successfully employed as ligands in combination with various metals to give catalysts capable of realizing a variety of synthetic transformations. One of the most widely used Schiff base ligands, the "salen" ligand, has been extensively researched. Recently, there has been increased interest in π-conjugated salen systems, known as "salphen" ligands, as a result of the differences in reactivity of the complexes in catalytic applications compared with the salen analogues. Complexes of salphen ligands display interesting photophysical and supramolecular properties which are not always observed with salen systems as a result of their π-conjugation. This tutorial review therefore describes the most significant advances recently made with salphen and related π-conjugated ligand systems.
席夫碱配体作为配体与各种金属结合已成功应用了很长时间，可得到能够实现多种合成转化的催化剂。其中一种应用最广泛的席夫碱配体是“salen”配体，对其进行了广泛的研究。最近，由于在催化应用中与 salen 类似物相比，配合物的反应性不同，人们对π共轭的 salen 体系，即“salphen”配体，产生了更多的兴趣。由于其π共轭，salphen 配体的配合物表现出有趣的光物理和超分子性质，而这些性质并不总是在 salen 体系中观察到。因此，本综述描述了最近在 salphen 和相关π共轭配体体系方面取得的最重要进展。
