Metal coordination complexes composed of photo-electrochemically active ligands

N-arylpyridinium molecules, 4,6-bis(4,4'-bipyridine-1-yl)-pyrimidine (1) an d 3,6-bis(4,4'-bipyridine-1-yl)-pyridazine (2) and 3-pyridylviologen (3) we re designed and synthesized as photoelectrochemically active ligands for co ordination polymer assemblies with various ions. Their two-step reduction p rocesses involving ion-radicals generation were observed in both electroche mical and photochemical processes. The photochemical ionradical formation i n 1-3 were observed in the solid state. The magnetic behavior of Cu complex of 3 after light irradiation showed the antiferromagnetic interaction betw een photochemically generated ionradical and Cu spins.