Expanded porphyrins are a class of porphyirinoid macrocycles possessing more than four pyrrole/other heterocyclic rings and multiple meso-carbon bridges in their conjugated structural frame-work. Expanded porphyrins are different from tetrapyrrolic porphyrin macrocycles in having larger π-electron circuit, larger sized macrocyclic core and are capable of exhibiting Hückel and Möbius topologies. The coordination chemistry of expanded porphyrins is distinct compared to porphyrins as they are capable of binding larger sized metal ions and also more than one metal ion in their macrocyclic core. In this review article, we summarize the syntheses, structure and properties of coordination complexes of expanded porphyrins spanning pentaphyrins (including sapphyrins and smaragdyrins), hexaphyrins (including rubyrins, amethyrins, and isoamethyrins), heptaphyrins, octaphyrins, nonaphyrins, decaphyrins and larger macrocycles containing different types of linkages between interconnected pyrrole units.

扩展的卟啉是一类卟啉类大环化合物，具有四个以上的吡咯/其他杂环和多个内消旋共轭结构框架中的碳桥。扩张的卟啉与四吡咯卟啉大环的不同之处在于具有更大的π电子回路，更大的大环核，并且能够展现Hückel和Möbius拓扑。与卟啉相比，膨胀卟啉的配位化学是不同的，因为它们能够结合更大尺寸的金属离子以及大环核中的一种以上金属离子。在这篇综述文章中，我们总结了扩展的卟啉的合成，结构和性质，这些卟啉跨越了五卟啉（包括七叶皂素和smaragdyrin），六卟啉（包括红宝石素，甲基紫杉醇和异甲腺苷酸），七卟啉，八碳素，九碳三烯，