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. A second C - H⋯O interaction arising from one of the C - H groups of the benzene ring links the dimers into  double chains.
|Number of pages||2|
|Journal||Acta Crystallographica Section E: Structure Reports Online|
|Early online date||2 Apr 2015|
|Publication status||Published - 1 May 2015|
- Crystal structure
- Hydrogen bonding
- Spiro compound