Synthesis, Thermal Studies, Spectroscopy Characterization, and Crystal Structure of Nicotinamidium Oxamate
2015
The title compound has been synthesized by grinding in an agate mortar. Its structure was characterized by TGA-DSC studies, FT-IR, X-ray powder diffraction data, and single-crystal X-ray diffraction. This compound crystallize in the monoclinic system with space group P21/c, Z = 4, and unit cell parameters a = 6.9834(4) A, b = 9.8771(6) A, c = 13.6740(8) A, and β = 103.861(1)°. The salt, C6H7N2O+·C2H2NO3−, or NA+:OXAM−, is an ionic ensemble assisted by hydrogen bonds established between nicotinamidium cations and oxamate anions. The molecular structure and crystal packing are stabilized mainly by four intermolecular N–H···O hydrogen bonds, reinforced by two C–H···O hydrogen bonds and three intramolecular interactions. The two components thus construct a supramolecular assembly with a three-dimensional hydrogen bonded framework.
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