Acta Cryst. (2009). E65, o1528  [ doi:10.1107/S1600536809021072 ]

2,2',7,7'-Tetrabromo-9,9'-spirobifluorene toluene hemisolvate

A. Guo and R. Zhu

Abstract: There are two independent molecules and one toluene solvent molecule in the asymmetric unit of the title compound, C₂₅H₁₂Br₄·0.5C₇H₈. The dihedral angles between the fluorene ring systems are 85.30 (6) and 84.95 (6)° in the two molecules. The disortions in angles from the ideal sp³-hybridization geometry around the tetrahedral C atoms are due to the strain imposed by the central five-membered ring and steric effects.

Online 10 June 2009

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