title: Crystal structure of methyl (E)-2-(1-methyl-2-oxoindolin-3-yl-idene)acetate.
abstract: The title compound, C12H11NO3, is essentially planar, with the mean plane of the acetate side chain [-C-C(=O)-O-C] being inclined to the mean plane of the indole ring system by 12.49 (7)°. The five- and six-membered rings of the indole group are almost coplanar, making a dihedral angle of 1.76 (8)°. The conformation about the C=C bond is E and there is an intra-molecular C-H⋯O hydrogen bond present. In the crystal, mol-ecules are linked by pairs of C-H⋯O hydrogen bonds forming inversion dimers, with an R 2 (2)(16) ring motif. The dimers are linked by a second pair of C-H⋯O hydrogen bonds, enclosing R 2 (2)(16) ring motifs, forming ribbons lying parallel to (-114). The ribbons are linked via C-H⋯π inter-actions, forming a three-dimensional structure.
authors.affiliation: Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India.
authors.forename: M P
authors.initials: MP
authors.lastname: Savithri
authors.affiliation: University of Madras, Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India.
authors.forename: P S
authors.initials: PS
authors.lastname: Yuvaraj
authors.affiliation: University of Madras, Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India.
authors.forename: B S R
authors.initials: BS
authors.lastname: Reddy
authors.affiliation: Department of Physics, Presidency College (Autonomous), Chennai 600 005, India.
authors.forename: R
authors.initials: R
authors.lastname: Raja
authors.affiliation: Department of Physics, Presidency College (Autonomous), Chennai 600 005, India.
authors.forename: A
authors.initials: A
authors.lastname: SubbiahPandi
keywords: 3-substituted indoles; C—H⋯O hydrogen bonds; C—H⋯π inter­actions; crystal structure; indole; π–π stacking inter­actions
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