Reaction of 1,3-cyclohexadiene(tricarbonyl)iron I with aryllithium, ArLi (Ar=C 6 H 53 -m-, p-CH 3 C 6 H 4 , p-CH 3 OC 6 H 4 , p-CF 3 C 6 H 4 ), in ether at low temperature, followed by subsequent alkylstion of the acylmetalates formed with Et 3 OBF 4 in aqueous solution at 0°G gave 5 crystalline compounds with the compositions of C 6 H 8 (CO) 2 FeC(OC 2 H 5 )Ar Ⅱ—Ⅵ formulated as isomerized products of cyclohexadiene(dicarbonyl)[ethoxy(aryl)earbene]iron complexes based on elemental analyses, spectral studies and single crystal X-ray structure determination. The results from syntheses, spectroscopic experiments and X-ray diffraction are reported, and a possible reaction mechanism is tentatively proposed in this paper.