Kinetic studies of ligand substitution reactions and general-base catalysis in amine-ligand exchange processes for group 6B metal carbonyl amine derivatives. Kinetic and spectroscopic evidence for hydrogen-bonded intermediates

Article abstract of DOI:10.1021/ic50226a029

The decomposition and ligand substitution reactions of group 6B metal pentacarbonyl piperidine derivatives with phosphines have been studied. The reactions are catalyzed by the Lewis bases OP(n-C₄H₉)₃ and tetrahydrofuran (THF). It is concluded that the results are best accounted for in terms of hydrogen-bonded intermediates in the general-base catalysis with the mechanism for catalysis being closely analogous to a dissociative interchange (I_d) pathway. The intermediates have been observed and characterized by infrared spectroscopy.