Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7810876 | Journal of Molecular Structure | 2013 | 7 Pages |
Abstract
Two molecular complexes of amides (nicotinamide and isonicotinamide) with 3-nitrophenol are characterized by X-ray diffraction and spectroscopic studies. Crystal structure analyses at 100 K revealed different features to distinguish the co-crystals. The asymmetric unit of the crystal structure of nicotinamide-3-nitrophenol (1:1), 1, consists of two symmetry-independent nicotinamide molecules and two symmetry-independent 3-nitrophenol molecules. The crystal structure of 1 displays an extended hydrogen bond network generated by OHâ¯O, NHâ¯O and NHâ¯N interactions. The structure of isonicotinamide-3-nitrophenol (1:1), 2, contains OHâ¯N hydrogen bonds engaging the pyridine N atom. In 2, the amide forms a R22(8) homodimer which is absent in 1. The complex 1 shows relatively efficient second harmonic frequency generation.
Related Topics
Physical Sciences and Engineering
Chemistry
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Authors
Halina M. Ratajczak, Iwona Bryndal, Isabelle Ledoux-Rak, Austin J. Barnes,