The complexes
 cis-[Fe(CO)
   3
 }
   2
 L] and
 cis-[Co(CO)
   2
 }
   2
 L] are prepared
 from 1,3,5,7-tetra-tert-butyl-s-indacene; in solution,
 the diiron complexes exhibit very strong electron–electron coupling
 between iron centres as evidenced by a 810 mV separation between the 0/+
 and +/2+ redox waves.
                                    顺式-[Fe(CO) 3 } 2 L]和顺式-[Co(CO) 2 } 2 L]配合物由 1,3,5,7- 四叔丁基-s-
茚制备而成;在溶液中,二
铁配合物在
铁中心之间表现出非常强的电子-电子耦合,0/+ 和 +/2+ 氧化还原波之间 810 mV 的分离就是证明。