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5306797 
Journal Article 
2',7'-Di-bromo-spiro-[cyclo-propane-1,9'-fluorene] 
Xue, YY; Qin, YQ 
2014 
Yes 
Acta Crystallographica. Section E: Structure Reports Online
ISSN: 1600-5368 
70 
Pt 7 
o821 
English 
25161597 
In the title compound, C15H10Br2, each mol-ecule is situated on special postion mm, so the asymmetric unit contains one-quater of a mol-ecule. The 2,7-di-bromo-9H-fluorene fragment and three spiro-cyclo-propane C atoms lie on different planes, which are perpendicular to each other. In the crystal, π-π inter-actions between aromatic rings [inter-centroid distance = 3.699 (3) Å] pack the mol-ecules into stacks extending in [001].