7′-Phenyl-1′,3′,5′,6′,7′, 7a-hexa-hydro-dipiro[acenaphthyl-ene-1,5′-pyrrolo-[1,2-c] thia-zole-6′,2′′-indane]-2,1′′(1H)-dione

Abstract

In the title compound, C31H23NO2S, the pyrrolidine ring adopts an envelope conformation (with the spiro C atom as the flap), while the thia-zolidine ring and the two cyclo-pentane rings adopt twisted conformations. The mean plane through the hexa-hydro-pyrrolo-[1,2-c] thia-zole ring [r.m.s deviation = 0.400 (1) Å] forms dihedral angles of 76.83 (4), 80.70 (5) and 79.00 (4)° with the benzene ring and the mean planes of the dihydro-acenaphthyl-ene and the dihydro-indene rings, respectively. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds into sheets lying parallel to the bc plane. One of the ketone O atoms accepts three such bonds. Weak C-H⋯π inter-actions are also observed.