N–C bond formation between two anilines coordinated to a ruthenium center in cis-form affording a 3,5-cyclohexadiene-1,2-diimine moiety†
Abstract
Ruthenium complexes containing two anilines or its derivatives, cis-[RuII(NH2C6H5)2(bpy)2]2+ ([1]2+) and cis-[RuII(NH2C6H4(4-CH3))2(bpy)2]2+ ([2]2+), were oxidized by four molar equivalents of (NH4)4[CeIV(SO4)4]·2H2O to give N1-phenylcyclohexa-3,5-diene-1,2-diimineruthenium(II) complexes, cis-[RuII(NHC6H4NC6H5)(bpy)2]2+ ([4]2+) and cis-[RuII(NHC6H3(4-CH3)NC6H4(4-CH3))(bpy)2]2+ ([5]2+), respectively, through an N–C bond formation between two aniline ligands cis-coordinated to the ruthenium center.