There are two mol-ecules in the asymmetric unit of the title compound, C(12)H(9)BrF(2)N(2)O. They have very similar conformations: the dihedral angles between their pyrazole and benzene ring systems are 78.4 (3) and 78.6 (4)°. In the crystal, weak aromatic π-π stacking [centroid-centroid separation = 3.696 (5) Å] helps to establish the packing.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2980109 | PMC |
| http://dx.doi.org/10.1107/S1600536809052532 | DOI Listing |
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