Site of ring opening of an asymmetric cyclopropene with iron carbonyls: the X-ray crystal structure of a vinylketen–iron tricarbonyl complex

The structure of the vinylketen–iron tricarbonyl derivative C6H10COFe(CO)3 obtained from 1,3,3-trimethylcyclopropene and Fe3(CO)12 or preferably Fe2(CO)9 has been shown by X-ray crystallography to be 2,4-dimethylpenta-1,3-dien-1-one(tricarbonyl)iron.