Research Article: 5-Fluoro-6′H,7′H,8′H-spiro­[indoline-3,7′-pyrano[3,2-c:5,6-c′]di-1-benzopyran]-2,6′,8′-trione

Date Published: March 01, 2012

Publisher: International Union of Crystallography

Author(s): Abdulrahman I. Almansour, Raju Suresh Kumar, Natarajan Arumugam, P. Devi Shree, J. Suresh.

http://doi.org/10.1107/S1600536812006332

Abstract

In the title compound, C26H12FNO6, the central pyran ring and both benzopyran systems are nonplanar, having total puckering amplitudes of 0.139 (2), 0.050 (1) and 0.112 (2) Å, respectively. The central pyran ring adopts a boat conformation. The crystal structure is stabilized by C—H⋯O, N—H⋯O, N—H⋯F and C—H⋯π inter­actions.

Partial Text

For the background to benzopyran derivatives, see: Martin & Critchlow (1999 ▶); Teague & Davis (1999 ▶); Joshi & Jain (1985 ▶); Ninamiya (1980 ▶); Kobayashi & Matsuda (1970 ▶). For hydrogen-bonding motifs, see: Bernstein et al. (1995 ▶).

 

Source:

http://doi.org/10.1107/S1600536812006332