The progress in bridged or substituted cyclopentadienyl (and indenyl) Fe-Fe bond carbonyl complexes is summarized. Their synthesis, molecular structures and reactivity are discussed.

• 综述了桥连或取代环戊二烯基（茚基）铁-铁键羰基化合物的研究进展。讨论了它们的合成、结构及其反应比。