Abstract
The structure of the title compound, C20H29NO2, is isotypic to that of its homologue 1-octylindoline-2,3-dione. The indoline ring and the two carbonyl-group O atoms are approximately coplanar, the largest deviation from the mean plane being 0.0760 (10) Å. The mean plane through the fused-ring system is nearly perpendicular to the mean plane passing through the 1-dodecyl chain [dihedral angle = 77.69 (5)°]. All C atoms of the dodecyl group are in an antiperiplanar arrangement. In the crystal, molecules are linked by C—H⋯O hydrogen bonds, forming a three-dimensional network.
Highlights
The structure of the title compound, C20H29NO2, is isotypic to that of its homologue 1-octylindoline-2,3-dione
The mean plane through the fused-ring system is nearly perpendicular to the mean plane passing through the 1-dodecyl chain [dihedral angle = 77.69 (5)]
All C atoms of the dodecyl group are in an antiperiplanar arrangement
Summary
Key indicators: single-crystal X-ray study; T = 123 K; mean (C–C) = 0.002 A; R factor = 0.035; wR factor = 0.100; data-to-parameter ratio = 16.8. The structure of the title compound, C20H29NO2, is isotypic to that of its homologue 1-octylindoline-2,3-dione. The indoline ring and the two carbonyl-group O atoms are approximately coplanar, the largest deviation from the mean plane being 0.0760 (10) A. The mean plane through the fused-ring system is nearly perpendicular to the mean plane passing through the 1-dodecyl chain [dihedral angle = 77.69 (5)]. All C atoms of the dodecyl group are in an antiperiplanar arrangement. Molecules are linked by C—HÁ Á ÁO hydrogen bonds, forming a three-dimensional network. For similar compounds see: Qachchachi et al (2013).
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