Crystal structure of 1',1''-dimethyl-4'-(4-cholorophen-yl)di-spiro-[11H-indeno[1,2-b]quinoxaline-11,2'-pyrrolidine-3',3''-piperidin]-4''-one

R A Nagalakshmi; J Suresh; K Malathi; R Ranjith Kumar; P L Nilantha Lakshman

doi:10.1107/S2056989014027698

Crystal structure of 1',1''-dimethyl-4'-(4-cholorophen-yl)di-spiro-[11H-indeno[1,2-b]quinoxaline-11,2'-pyrrolidine-3',3''-piperidin]-4''-one

Acta Crystallogr E Crystallogr Commun. 2015 Jan 3;71(Pt 2):o68-9. doi: 10.1107/S2056989014027698. eCollection 2015 Feb 1.

Authors

R A Nagalakshmi¹, J Suresh¹, K Malathi², R Ranjith Kumar², P L Nilantha Lakshman³

Affiliations

¹ Department of Physics, The Madura College, Madurai 625 011, India.
² Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India.
³ Department of Food Science and Technology, University of Ruhuna, Mapalana, Kamburupitiya 81100, Sri Lanka.

Abstract

In the title compound, C30H27ClN4O, the central pyrrolidine ring adopts an envelope conformation with the methyl-ene 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 intra-molecular C-H⋯N inter-action is observed. In the crystal, C-H⋯π inter-actions lead to supra-molecular 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: Cl⋯Cl contact; C—H⋯π interaction; crystal structure; intramolecular C—H⋯N interaction; quinoxaline derivative.