nickelocene
dicarbonyl(η5-cyclopentadienyl){tetracarbonylbis(η5-cyclopentadienyl)-μ-hydrido-dimolybdenum(Mo-Mo)}-μ3-{(triphenylphosphino)methylenarsinidine}-molybdate * methylene dichloride
iron pentacarbonyl
μ4-arsenic-μ-carbonyl-diμ(Fe, Mo)-carbonyl-dicarbonylbis(η5-cyclopentadienyl)(dicarbonyliron){tricarbonyl(η5-cyclopentadienyl)molybdenum}dimolybdenum (2 Fe-Mo, Mo-Mo)