Synonyms: 1,3-Butanedione,1-(cyclopentadienyl)-, Fe deriv. (6CI); Iron(II),bis(acetoacetylcyclopentadienyl)- (8CI); Iron, bis(acetoacetylcyclopentadienyl)-(7CI); 1,1'-Bis(1,3-dioxobutyl)ferrocene; 1,1'-Bisacetoacetylferrocene;1,1'-Diacetoacetylferrocene; 1,3-Butanedione, 1,1'-(1,1'-ferrocenediyl)bis-