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

Acta Crystallogr Sect E Struct Rep Online. 2012 Mar 1;68(Pt 3):o744. doi: 10.1107/S1600536812006332. Epub 2012 Feb 17.

Abstract

In the title compound, C(26)H(12)FNO(6), 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 inter-actions.