5-Methyl-spiro-[indoline-3,7'-[6H,7H,8H]pyrano[3,2-c:5,6-c']di[1]benzopyran]-2,6',8'-trione chloroform hemisolvate

Acta Crystallogr Sect E Struct Rep Online. 2012 Apr 1;68(Pt 4):o1194. doi: 10.1107/S1600536812012020. Epub 2012 Mar 28.

Abstract

In the title compound, C(27)H(15)NO(6)·0.5CHCl(3), the central pyran ring and both the benzopyran systems are planar, with the dihedral angle between the outer rings being 3.24 (6)°. The indolin-2-one system is in a perpendicular configuration with respect to the pyran ring [dihedral angle = 87.58 (2)°]. Supra-molecular layers in the ac plane are formed in the crystal structure whereby inversion-related mol-ecules are connected by N-H⋯O hydrogen bonds. These are further linked by C-H⋯O inter-actions, forming a supra-molecular layer in the ac plane. Disordered CHCl(3) solvent in the structure was modelled with the SQUEEZE routine in PLATON [Spek (2009 ▶). Acta Cryst. D65, 148-155].