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Acta Cryst. (2009). E65, o136 [ doi:10.1107/S1600536808042098 ]
Abstract: There are two independent molecules in the asymmetric unit of the title compound, C12H12BrNO2. The C-C bond lengths of the two carbonyl C atoms of the five-membered rings are distinctly longer than a normal Csp2-Csp2 single bond. One of the molecules makes parallel self-coupled (inversion) dimers by
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interactions with phenyl-phenyl interplanar distances of 3.403 (2) Å. The other molecule also forms self-dimers at longer phenyl-phenyl plane distances [3.649 (2) Å]. In the crystal, a C-H
O interaction is seen.
Online 17 December 2008
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