Dinuclear complexes of europium(III) and gadolinium(III) ions with a julolidine–quinoline-based tridentate ligand

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Taylor and Francis Online
The reaction of europium(III) or gadolinium(III) acetates with a Schiff base ligand {HL (C22H21N3O) = ((E)-9-((quinolin-8-ylimino)methyl)-1,2,3,5,6,7-hexahydropyrido[3,2,1-ij]quinolin-8-ol)} in methanol affords two dinuclear complexes which have been characterized by powder X-ray diffraction, Raman spectroscopy, scanning electron microscope–electron dispersive spectroscopy, absorption and emission spectroscopies as well as single-crystal X-ray diffraction. [Eu2L2(CH3COO)4(CH3OH)2] (1) and [Gd2L2(CH3COO)4(CH3OH)2] (2) are iso-structures, each consisting of two M : L : CH3COO : CH3OH (1 : 1 : 1 : 1) units bridged by two acetate anions with the metal center in a distorted capped square antiprismatic coordination geometry. Their vibration modes, electronic structures, and photoluminescent properties are reported. © 2016 Taylor & Francis Group
Quinolines, Europium, Gadolinium, Ligands, X-ray diffraction, Raman spectroscopy, Electronic structure, Absorption, Emission spectroscopy, Scanning electron microscopy
Fanna, D. J., Zhang, Y., Salih, A., Reynolds, J. K., & Li, F. (2016). Dinuclear complexes of europium (III) and gadolinium (III) ions with a julolidine–quinoline-based tridentate ligand. Journal of Coordination Chemistry, 69(11-13), 1883-1892. doi:10.1080/00958972.2016.1194403