Three Co(II) complexes [Co(meophtpy)2](ClO4)2·2CH3CN (1), [Co(nh2phtpy)2](ClO4)2·2CH3CN (2), [Co(ftpy)2](ClO4)2·2CH3CN (3) and three Mn(II) complexes [Mn(nme2phtpy)2]·(ClO4)2·2CH3CN (4), [Mn(ftpy)2](ClO4)2·CH3CN (5), [Mn(meophtpy)(H2O)(NO3)2]·CH3CN (6) (meophtpy, 4′-(4- methoxyphenyl)-2,2′:6′,2″-terpyridine; nh2phtpy, 4′-(4-aminophenyl)-2,2′:6′,2″-terpyridine; ftpy, 4′-(furan- 2-yl)-2,2′:6′,2″-terpyridine; nme2phtpy, 4′-(4-(N,N-dimethylamino)phenyl)-2,2′:6′,2″-terpyridine) are synthesized and their structures are determin...