4′-(4-Bromophenyl)-1′-methyldispiro[acenaphthylene-1,2′-pyrrolidine-3′,2′′-indane]-2,1′′(1H)-dione

Abstract

In the title compound, C30H22BrNO2, the cyclopentane ring of the dihydroacenaphthylene group and the pyrrolidine ring are both in envelope conformations with the spiro C atom and N atom, respectively, as the flap atom. The cyclopentane ring of the indane group adopts a half-chair conformation. A weak intramolecular C—H...O hydrogen bond forms an S(8) ring motif. The naphthalene ring system of the dihydroacenaphthylene group forms dihedral angles of 41.76 (6) and 42.17 (6)° with the benzene ring of the bromophenyl group and the benzene ring of the indane group, respectively. The dihedral angle between the two benzene rings is 83.92 (7)°. In the crystal, molecules are linked by weak C—H...O and C—H...N hydrogen bonds into a two-dimensional network parallel to the ac plane. Weak C—H...π interactions are also observed.