Thus, DABCO has also been widely utilized as a ligand in prepa-ration of metal complexes and several structures of metal-DABCO compounds have been reported.8-12 However, to the best of our knowledge there is only one crystal structure of iron carbonyl with the DABCO ligand that has been previously reported.11 There are no reports on crystal structures of iron-DABCO compounds in which both cyclopentadienyl and carbonyls are present. Herein we report three crystal structures of DABCO complexes of the half sandwich cyclopentadienyliron dicarbonyl moiety,[(η5-C5H5)(CO)2Fe (1, 2 and 3 in Scheme 1).