(Phthalimidomethyl)- and (Phenoxymethyl)cobalt Carbonyls. Equilibria of CO Insertion

Phthalimidomethyl and phenoxymethyl as well as corresponding acetyl cobalt tetracarbonyls (1-4) were prepared and characterized. The single-crystal X-ray diffraction molecular structure of 1 (the first X-ray structure of an alkylcobalt tetracarbonyl with a pure organic alkyl group) was determined. The equilibrium constants of the equilibria 1 half arrow pointing right over half arrow pointing left 2 and 3 half arrow pointing right over half arrow pointing left 4 were determined at 20-60 and 20-40 degrees C, respectively