Complete self-recognition of chirality is observed in the Michael addition of the enolate derived from R,S-[(eta-5-C5H5)Fe(CO)(PPh3)-COCH3] to the acryloyl complex R,S-[(eta-5-C5H5)Fe(CO)(PPh3)-COCH = CH2)] to generate exclusively the single diastereoisomer of the glutaroyl complex RR,SS-[(eta-5-C5H5)Fe(CO)(PPh3)COCH2]2CH2.