The structure of anti-e-bromoacetophenone oxime (CsHsNOBr) was solved by Fourier methods and refined by full-matrix least-squares analysis to a final RI = 0.046; space group: 14, Z= 8. The distances and angles are similar to those observed in other oxime structures. The phenyl group and the oxime function are not coplanar, the angle between their normals being 54.3 °. Molecules are linked into tetramers by O-H.--N hydrogen bonds about an $4 axis at -}, 0, z, with both the oxygens and nitrogens assuming nearly tetrahedral arrangements. A cluster of four bromine atoms make van der Waals contacts of 3.681 ,~ about an $4 axis at 0, 0, z.

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