Abstract The ruthenium (II) and rhenium (I) complexes containing an NAD (P) H model compound, 1-benzyl-1, 4-dihydronicotinamide (BNAH), as ligand,[Ru (tpy)(bpy)(BNAH)] 2+(1 a) and [Re (bpy)(CO) 3 (BNAH)]+(1 b), were quantitatively produced by the reaction of