The two aromatic rings in the title compound, C12H6Cl2N2O3S, form a di
hedral angle of 56.7(1)degrees. The alkanoyl chloride group lies sligh
tly out of the plane of the aromatic ring with the carbonyl O and alka
noyl Cl atoms lying 0.219(2) and -0.374(1) Angstrom, respectively, fro
m the ring. The nitro group deviates from coplanarity with its aromati
c ring, displaying a torsion angle along N-C of 34.9(3)degrees. The C-
S-C angle is 102.85(9)degrees. Bond distances C=O and S-C have values
of 1.178(3) Angstrom, and 1.766(2) and 1.767(2) Angstrom, respectively
.