Synthesis, characterization and properties of nicotinamide and isonicotinamide complexes with diverse dicarboxylic acids

Abstract

Five nicotinamide and isonicotinamide complexes with diverse dicarboxylic acids, {[Cu(mu(2)-ida)(na)]center dot H2O}(n) (1), [Cu(oda)(H2O)(2)(ina)] (2), [Zn(oda)(H2O)(2)(na)] (3), [Zn(oda)(H2O)(2)(ina)]center dot H2O (4) and [Zn(tda)(H2O)(2)(ina)]center dot 2H(2)O (5), [ida: 2,2'-iminodiacetate, NH(CH2COOH)(2), oda: 2,2'-oxydiacetate, O(CH2COOH)(2), tda: 2,2'-thiodiacetate, S(CH2COOH)(2), na: nicotinamide and ina = isonicotinamide] were synthesized and characterized by elemental analysis, IR spectroscopy and single crystal X-ray diffraction. In all complexes, ina and na ligands connected to metal centers from pyridyl nitrogen atom. In complex 1, ida ligand acts as a bridging ligand to form 1D chain while in the other complexes, oda and tda act as chelating ligands. In all complexes, three dimensional (3D) supramolecular networks are generated through the O-H center dot center dot center dot O and N-H center dot center dot center dot O hydrogen bonds. Moreover, thermal, photoluminescence and optical absorption properties were studied. (C) 2017 Elsevier Ltd. All rights reserved.