Abstract
In the title compound, C12H11NO4, the dihedral angle between the indole ring system (r.m.s. deviation = 0.019 Å) and the oxirane ring is 88.8 (2)°. The oxirane O atom and the bridging ester O atom are in an approximate syn conformation [O—C—C—O = −25.4 (3)°] In the crystal, inversion dimers linked by pair of C—H⋯O hydrogen bonds generate R 2 2(8) loops, where the C—H donor group forms part of the oxirane ring. A second C—H⋯O interaction arising from one of the C—H groups of the benzene ring links the dimers into [001] double chains.
Highlights
In the title compound, C12H11NO4, the dihedral angle between the indole ring system (r.m.s. deviation = 0.019 Å) and the oxirane ring is 88.8 (2)
The oxirane O atom and the bridging ester O atom are in an approximate syn conformation [O—
C—C—O = 25.4 (3) ] In the crystal, inversion dimers linked by pair of C—H O hydrogen bonds generate R22(8) loops, where the C—H donor group forms part of the oxirane ring
Summary
Crystal structure of methyl 1-methyl-2oxospiro[indoline-3,20 -oxirane]-30 carboxylate Rajac and Department of Physics, Queen Mary’s College (Autonomous), Chennai 600 004, India, bUniversity of Madras, Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India, and cDepartment of Physics, Presidency College (Autonomous), Chennai 600 005, India. Received 10 February 2015; accepted 29 March 2015
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