Ruthenium Formyl Complexes as the Branch Point in 2-Electron and Multielectron Reductions of CO2

Toyohara K; Nagao H; Mizukawa T; Tanaka K

Inorganic Chemistry, Vol.34, No.22, 5399-5400, 1995

Toyohara K, Nagao H, Mizukawa T, Tanaka K

Both [Ru(bpy)(2)(CO)(CHO)](+) and [Ru(bpy)(trpy)(CHO)](+) (bpy = 2,2’-bipyridine; trpy = 2,2’:6’,2 "-terpyridine) were characterized. The latter is a key intermediate in four- and six-electron reductions of CO2 producing HCHO, CH3OH, HOOCCHO, and HOOCCH2OH. The reactivity of these formyl complexes toward CO2 reveals a new pathway of HCOOH formation in electrochemical CO2 reduction.

Keywords:NEUTRAL METAL-FORMYL;GAS SHIFT REACTIONS;CARBON-DIOXIDE;(C5H5)RE(CO)2(NO)+ CATION;FISCHER-TROPSCH;PHOTOREDUCTION;DISPROPORTIONATION;(RU(BPY)2(CO)CL)+;CYCLAM;MODELS