THE CRYSTAL PACKING OF 4,7-DIBROMOBENZOFURAZAN 1-OXIDE

C6H2Br2N2O2, M(r) = 293.90, monoclinic, C2/c, a = 23.083 (26), b = 7.842 (3), c = 28.081 (13) angstrom, beta = 105.97 (7)-degrees , V/Z = 203.6 (5) angstrom3, Z = 24 (3 molecules in the asymmetric unit), D(x) = 2.396 (6) g cm- 3, lambda(Mo K-alpha) = 0.71069 angstrom, mu = 98.1 cm -1, F(000) = 3312, T= 297 (2) K, R = 0.079 for 2187 unique observed reflections with I > sigma(I). Bond lengths and angles are normal. Each of the six independent Br atoms is close to either an O or an N atom on an adjacent molecule. These interactions organize the molecules into two-dimensional sheets. These sheets are of two different kinds, both involving the same kinds of intermolecular interactions, but with distinctly different overall patterns.