In the title compound, C35H27N3O3S, the spiro-linked five-membered rings both adopt twisted conformations. The pyrrolidine ring makes dihedral angles of 80.5 (1) and 77.4 (9)° with the benzothiophene ring system and the quinoxaline ring system, respectively. The S atom and C=O unit of the benzothiophene ring system are disordered over two opposite orientations in a 0.768 (4):0.232 (4) ratio. The atoms of the ethyl side chain are disordered over two sets of sites in a 0.680 (16):0.320 (16) ratio. In the crystal, molecules are linked by C - H⋯O, C - H⋯N and π-π interactions [shortest centroid-centroid distance = 3.4145 (19) Å], resulting in a three-dimensional network.
|Number of pages||2|
|Journal||Acta Crystallographica Section E: Structure Reports Online|
|Early online date||21 Feb 2015|
|Publication status||Published - 1 Mar 2015|
Bibliographical noteThe authors thank the TBI X-ray facility, CAS in Crystallography and BioPhysics, University of Madras, Chennai, India, for the data collection.
- Biological activity
- Crystal structure
- Dispiro compounds
- Hydrogen bonding