Synthesis of novel N-(3-chloro-4-flurophenyl)-2-(5-((3-(4-hydroxy-2, 2-dimethyl-2, 3-dihydrobenzofuran-5-yl)-1-phenyl-1H-pyrazol-4-yl) methylene)-4-oxo-2-thioxothiazolidin-3-yl) acetamides having anti-inflammatory activity

Crystal structure, Hirshfeld surface analysis and DFT study of N-(2-amino-5-methyl-phen-yl)-2-(5-methyl-1H-pyrazol-3-yl)acetamide

The title mol-ecule, C13H16N4O, adopts an angular conformation. In the crystal a layer structure is generated by N-H⋯O and N-H⋯N hydrogen bonds together with C-H⋯π(ring) inter-actions. Hirshfeld surface analysis indicates that the most important contributions to the crystal packing are from H⋯H (53.8%), H⋯C/C⋯H (21.7%), H⋯N/N⋯H (13.6%), and H⋯O/O⋯H (10.8%) inter-actions. The optimized structure calculated using density functional theory (DFT) at the B3LYP/ 6-311 G(d,p) level is compared with the experimentally determined structure in the solid state. The calculated HOMO-LUMO energy gap is 5.0452 eV.

Crystal structure and Hirshfeld surface analysis of N-{2-[(E)-(4-methyl-benzyl-idene)amino]-phen-yl}-2-(5-methyl-1-H-pyrazol-3-yl)acetamide hemihydrate

The asymmetric unit of the title compound, C20H20N4O·0.5H2O, contains two independent organic mol-ecules (1 and 2) and a water mol-ecule of crystallization. The two mol-ecules differ primarily in the dihedral angles between the aromatic rings, which are 7.79 (7) and 29.89 (7)° in mol-ecules 1 and 2, respectively. In each mol-ecule there is intra-molecular C-H⋯O hydrogen bond forming an S(6) ring motif. In mol-ecule 1 there is an intra-molecular N-H⋯π(pyrazole) inter-action and an intra-molecular C-H⋯π(pyrazole) inter-action present. Mol-ecule 1 is linked to mol-ecule 2 by a C-H⋯π(benzene ring) inter-action. An intra-molecular N-H⋯N hydrogen bond and an intra-molecular C-H⋯N hydrogen bond are also present in mol-ecule 2. In the crystal, the three components are linked by Owater-H⋯N, N-H⋯Owater and N-H⋯N hydrogen bonds, forming chains along the [100] direction. The chains are linked by C-H⋯O and C-H⋯N hydrogen bonds, forming layers parallel to the ab plane. Finally, the layers are linked by C-H⋯π inter-actions, forming a three-dimensional structure.