Nickel(II), Cadmium(II), and Copper(II) Complexes Based on Ditopic Terpyridine Derivative Ligand: Syntheses,Crystal Structures,and Luminescent Properties |
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Authors: | Ai‐Jiang Zhang Chang‐Juan Chen Dong‐Yang Lou Yu‐Hang Miao Chen‐Xu Qiao Jiang‐Bo Hu |
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Affiliation: | Department of Chemistry and Chemical Engineering, Huanghuai University, Zhumadian 463000, P. R. China |
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Abstract: | Three complexes with the ditopic ligand 4′‐[4‐(quinolin‐8‐yloxymethyl)phenyl]‐2,2′:6′,2′′‐terpyridine (abbreviated as L ), [Ni(L)2](CH3COO)2 ( 1 ), [Cd(L)2](ClO4)2 ( 2 ), and [Cu2(L)2](ClO4)4 · 4DMF ( 3 ), were synthesized and characterized by elemental analysis, IR spectroscopy, and structurally analyzed by X‐ray single‐crystal diffraction. Interestingly, in complexes 1 and 2 , two ligands adopt a tridentate chelating pattern where the oxaquinoline group is non‐coordinated and coordinate with one MII ion (M = Ni for 1 , M = Cd for 2 ) to form a mononuclear unit. In complex 3 , two ligands bridge two CuII ions by pyridyl N atoms, ethereal O atoms, and quinolyl N atoms in a head‐to‐tail mode to generate a dinuclear [Cu2L2] unit. Moreover, extended 1D and 2D supramolecular architectures are further constructed in 1 – 3 by multiple secondary interactions such as aromatic stacking and hydrogen bonding. Notably, the structural diversity of complexes 1 – 3 can be properly assigned to the central metal ions that have distinct coordination preferences. In addition, luminescent properties of the ligand and complex 2 were also investigated. |
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Keywords: | Ditopic ligand Terpyridine Complexes Crystal structure Luminescence |
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