Synthesis of 2,2'-Bipyridines Bearing Amino or Carboxyl Group at the Side Chain and Physical Properties of Their Ruthenium(II) Complexes
摘要:
The synthesis of unsymmetrical 2,2'-bipyridines, in which one pyridine ring of bipyridine is linked to the amino or carboxyl group through the alkyl chain as the side chain became possible by the regioselective O-alkylation of pyridyl-2( 1H)-pyridinones. Synthetic tris(bipyridine)ruthenium(II) showed characteristic metal-to-ligand charge transfer (MLCT) bands at around 480 nm. The standard redox potentials of new [Ru(bpy)(3)](2+) were about 200 mV lower than that of the parent [Ru(bpy)(3)](2+). The p-substituent effect of the benzene ring upon the redox potential was observed.
Synthesis of 2,2'-Bipyridines Bearing Amino or Carboxyl Group at the Side Chain and Physical Properties of Their Ruthenium(II) Complexes
摘要:
The synthesis of unsymmetrical 2,2'-bipyridines, in which one pyridine ring of bipyridine is linked to the amino or carboxyl group through the alkyl chain as the side chain became possible by the regioselective O-alkylation of pyridyl-2( 1H)-pyridinones. Synthetic tris(bipyridine)ruthenium(II) showed characteristic metal-to-ligand charge transfer (MLCT) bands at around 480 nm. The standard redox potentials of new [Ru(bpy)(3)](2+) were about 200 mV lower than that of the parent [Ru(bpy)(3)](2+). The p-substituent effect of the benzene ring upon the redox potential was observed.
The synthesis of unsymmetrical 2,2'-bipyridines, in which one pyridine ring of bipyridine is linked to the amino or carboxyl group through the alkyl chain as the side chain became possible by the regioselective O-alkylation of pyridyl-2( 1H)-pyridinones. Synthetic tris(bipyridine)ruthenium(II) showed characteristic metal-to-ligand charge transfer (MLCT) bands at around 480 nm. The standard redox potentials of new [Ru(bpy)(3)](2+) were about 200 mV lower than that of the parent [Ru(bpy)(3)](2+). The p-substituent effect of the benzene ring upon the redox potential was observed.