Intramolecular short hydrogen bond: the structure of benzenesulphonylhydrazone derivative of salicylaldehyde

The title compound crystallizes in the monoclinic space group P2₁/c, with a=10.449(2), b=11.555(1), c=10.854(2) Å, β=90.46(2)° and V=1310.3 ų. For Z=4 and F.W.=274.32 the calculated density is 1.39 g/cm³. The structure was solved by direct method, and refined by full-matrix least-squares methods to R=0.034 for 3013 observed reflections. The stereochemistry of the 6/5-ring-H-bonded moiety is found to be planar, the rings being fused at the C(8)-C(13) bond. The-NSO₂Ph group is linked with the fused-6/5 H-bonded ring through the N(4)-S(1) bond and the phenyl ring in the group is disposed perpendicular to the former ring system. The structure of the ligand appears to be suitable for bis-chelate formation with metals such as Cu(II) or Ni(II).