Synonyms: Dicyclopentadienyldiirontetracarbonyl (6CI); Iron, di-m-carbonyldicarbonyldi-p-cyclopentadienyldi-, (Fe-Fe) (8CI); Bis(cyclopentadienyldicarbonyliron);Bis(cyclopentadienyliron dicarbonyl); Bis(dicarbonyl(h5-cyclopentadienyl)iron);Bis(dicarbonyl-p-cyclopentadienyliron);Bis(p-cyclopentadienyldicarbonyliron);Bis(p-cyclopentadienylirondicarbonyl);Bis[dicarbonyl(p-cyclopentadienyl)iron(II)];Cyclopentadienyldicarbonyliron dimer; Cyclopentadienylirondicarbonyl dimer; Di-m-carbonylbis[carbonyl(h5-cyclopentadienyl)iron]; Di-m-carbonyldicarbonylbis[(1,2,3,4,5-h)-2,4-cyclopentadien-1-yl]diiron;Di-m-carbonyldicarbonyldi-p-cyclopentadienyldiiron;Dicarbonyl-p-cyclopentadienyliron dimer;Dicarbonylcyclopentadienyliron dimer; Dicyclopentadienyliron dicarbonyl dimer;Dicyclopentadienyltetracarbonyldiiron;Tetracarbonylbis(cyclopentadienyl)diiron; Tetracarbonylbis(h5-cyclopentadienyl)diiron