Crystal structure of 1′,1′′-dimethyl-4′-(4-cholorophenyl)dispiro[11H-indeno[1,2-b]quinoxaline-11,2′-pyrrolidine-3′,3′′-piperidin]-4′′-one

Abstract

In the title compound, C30H27ClN4O, the central pyrrolidine ring adopts an envelope conformation with the methylene C atom being the flap. The quinoxaline and indane rings are each essentially planar, with r.m.s. deviations of 0.027 (1) and 0.0417 (1) Å, respectively. The pyrrolidine ring forms dihedral angles of 88.25 (1) and 83.76 (1)° with the quinoxaline and indane rings, respectively. A weak intramolecular C—H...N interaction is observed. In the crystal, C—H...π interactions lead to supramolecular chains along [101] that assemble in the ac plane. Connections along the b axis are of the type Cl...Cl [3.6538 (16) Å].

Keywords

• crystal structure
• quinoxaline derivative
• intramolecular C—H...N interaction
• C—H...π interaction
• Cl...Cl contact