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Synthesis and structural characterization of binuclear ytterbium(III) complexes with 2-amino and 3-amino benzoic acid |
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| Authors: | S Hussain I U Khan M Akkurt S Ahmad M N Tahir |
| Institution: | 1. Materials Chemistry Laboratory, Department of Chemistry, GC University, Lahore, 54000, Pakistan 2. Department of Physics, Faculty of Sciences, Erciyes University, Kayseri, 38039, Turkey 3. Department of Chemistry, University of Engineering and Technology, Lahore, 54890, Pakistan 4. Department of Physics, University of Sargodha, Sargodha, Pakistan |
| Abstract: | Two novel homobinuclear ytterbium(III) complexes, Yb2(2AMB)6(H2O)4] · 2C2H6O (I) and Yb2(3AMB)6(H2O)4] · 3H2O (II) (2AMB = 2-aminobenzoic acid, 3AMB = 3-aminobenzoic acid) have been synthesized and characterized by elemental analysis, infrared spectroscopy, thermogravimetric analysis and X-ray crystallography (CIF files CCDC nos. 950103 (I), 921652 (II)). Complex I crystallizes in triclinic space group \(P\bar 1\) and complex II crystallizes in monoclinic space group P21/n. X-ray analysis shows that both complexes (I, II) have the dinuclear structure. The central Yb3+ ions in both complexes are eight-coordinated adopting distorted YbO8 dodecahedral geometry. Each Yb3+ ion is coordinated to two O atoms from bridging carboxylate, four O atoms from the chelating carboxylate ligands and two O atoms of water molecules. The crystal structure of I and II are stabilized by N-H…O, O-H…O, O-H…N, and C-H…O hydrogen bonds, C-H…π interactions and weak π-π stacking interactions. |
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