Abstract
In the title compound, C25H20N6O2·0.15H2O, the dihedral angles between the least-squares planes of the indole and pyrrolidine rings and between the oxindole and imidazole rings are 77.66 (7) and 45.31 (7)°, respectively. The pyrrolidine ring and the fused five-membered pyrrolidine ring of the oxindole moiety exhibit twisted conformations. The amide N atom is involved in both intra- and intermolecular hydrogen bonding, having a bifurcated character. The molecular structure is characterized by an intramolecular N—H⋯O hydrogen bond, which generates an S(7) ring motif while an intermolecular N—H⋯O hydrogen bond links the organic and solvent water molecules. In the crystal, N—H⋯N hydrogen bonds generate a zigzag chain running parallel to c-axis direction. The H atoms of the solvent water molecule were not located.
Highlights
Crystal dataSri Ram Engineering College, Chennai 602 024, India, bOrganic Chemistry Division, Central Leather Research Institute, Adyar, Chennai 600 020, India, and cDepartment of Physics, RKM Vivekananda College (Autonomous), Chennai 600 004, India
C25H20N6O20.15H2O, the dihedral angles between the least-squares planes of the indole and pyrrolidine rings and between the oxindole and imidazole rings are 77.66 (7) and 45.31 (7), respectively
The molecular structure is characterized by an intramolecular N—H O
Summary
Sri Ram Engineering College, Chennai 602 024, India, bOrganic Chemistry Division, Central Leather Research Institute, Adyar, Chennai 600 020, India, and cDepartment of Physics, RKM Vivekananda College (Autonomous), Chennai 600 004, India. Key indicators: single-crystal X-ray study; T = 295 K; mean (C–C) = 0.002 Å; Hatom completeness 99%; disorder in solvent or counterion; R factor = 0.040; wR factor = 0.110; data-to-parameter ratio = 15.1
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