pH-Dependent Fixation of Carbon Dioxide by Water-Soluble Ruthenium Hydride Complexes

摘要

A water-soluble hydride complex [(eta~6-C_f,Me_6)Ru~II(bpy)H]~+ {1,bpy = 2,2'-bipyridine} serves as a robust reducing agent for the reduction of Co_2 rather than HCO_3~-or CO_3~(2-)in water in a pH range of about 3-5 at ambient temperature under stoichiometric conditions.The structure of 1 was unequivocally determined by X-ray analysis.The mechanism of acid-catalyzed reduction of CO,promoted by 1 in water under acidic conditions is disclosed.