Syntheses, crystal structures and luminescence of zinc(II) and cadmium(II) complexes with 4′-substituted 2,2′:6′,2″-terpyridines.

Four terpyridine coordination complexes, [Zn(meophtpy)2]·(ClO4)2·(H2O) (1), [Cd(meophtpy)2]·(ClO4)2(2), [Zn(nh2phtpy)2]·(ClO4)2(3), and [Cd(nh2phtpy)2]·(ClO4)2(4) (meophtpy = 4′-(p-methoxylphenyl)-2,2′:6′,2″-terpyridine, nh2phtpy = 4′-aminophenyl-2,2′:6′,2″-terpyridine), were synthesized using the solvothermal method. These complexes have been characterized by IR spectra, elemental analyses, and X-ray diffraction. In all these complexes, the metal ions are coordinated by six nitrogens from two terpyridines. 3-D networks have been constructed by hydrogen bonds and π–π interactions. The luminescence of these four complexes has been investigated in the solid state at room temperature. Four Zn(II) and Cd(II) complexes with two kinds of terpyridines have been synthesized and characterized. All these complexes are six N coordinated with two terpyridines. 3-D networks have been formed with hydrogen bonds and π–π interactions. The luminescence properties have been studied and all these ligands and complexes can be used as luminescence materials. [ABSTRACT FROM AUTHOR]