2,2,2,2-tetracarbonyl-1-methoxy-1,4-dimethyl-1-sila-2-ferracyclopentane

2,2,2,2-tetracarbonyldimethyl-n-butyl-1-sila-2-ferracyclopentane

tricarbonyl-μ3-(acetylene)-cyclo-bis(tricarbonylcobalt)iron(Co-Co,2Fe-Co)