Crystal structure of 14-methyl-11-(3-methyl-phen-yl)-12-oxa-8,14-di-aza-tetra-cyclo-[8.3.3.0(1,10).0(2,7)]hexa-deca-2(7),3,5-triene-9,13-dione

M P Savithri; M Suresh; R Raghunathan; R Raja; A SubbiahPandi

doi:10.1107/S2056989015008129

Crystal structure of 14-methyl-11-(3-methyl-phen-yl)-12-oxa-8,14-di-aza-tetra-cyclo-[8.3.3.0(1,10).0(2,7)]hexa-deca-2(7),3,5-triene-9,13-dione

Acta Crystallogr E Crystallogr Commun. 2015 May 7;71(Pt 6):o379-80. doi: 10.1107/S2056989015008129. eCollection 2015 Jun 1.

Authors

M P Savithri¹, M Suresh², R Raghunathan², R Raja³, A SubbiahPandi³

Affiliations

¹ Department of Physics, Queen Mary's College (Autonomous), Chennai 600 004, India.
² Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India.
³ Department of Physics, Presidency College (Autonomous), Chennai 600 005, India.

Abstract

In the title compound, C21H20N2O3, the lactone ring adopts an envelope conformation with the quaternary C atom bonded to two other C atoms as the flap. The fused pyrrolidine ring adopts a twisted conformation about the Cq-N (q = quaternary) bond. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R 2 (2)(8) loops. The dimers are linked into [110] chains by pairs of C-H⋯O inter-actions, which generate R 2 (2)(14) loops.

Keywords: crystal structure; hexadecatrienedione; hydrogen bonding; tetracyclo.