Synonyms: Ferrocene,1,1''-ethylenedi- (8CI); Iron,(ethylenedicyclopentadienylene)bis[cyclopentadienyl- (6CI,7CI);1,2-Bis(ferrocenyl)ethane; 1,2-Diferrocenylethane; Iron, bis(h5-2,4-cyclopentadien-1-yl)[m-[1,2-ethanediylbis(h5-2,4-cyclopentadien-1-ylene)]]di-