title: 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.
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].
authors: Department of Physics, The Madura College, Madurai 625 011, India.
authors: R A
authors: RA
authors: Nagalakshmi
authors: Department of Physics, The Madura College, Madurai 625 011, India.
authors: J
authors: J
authors: Suresh
authors: Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India.
authors: K
authors: K
authors: Malathi
authors: Department of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India.
authors: R Ranjith
authors: RR
authors: Kumar
authors: Department of Food Science and Technology, University of Ruhuna, Mapalana, Kamburupitiya 81100, Sri Lanka.
authors: P L Nilantha
authors: PL
authors: Lakshman
keywords: Cl⋯Cl contact; C—H⋯π inter­action; crystal structure; intra­molecular C—H⋯N inter­action; quinoxaline derivative