INTRAMOLECULAR SHORT HYDROGEN-BOND - THE STRUCTURE OF BENZENESULPHONYLHYDRAZONE DERIVATIVE OF SALICYLALDEHYDE

The title compound crystallizes in the monoclinic space group P2(1)/c, with a = 10.449(2), b 11.555(1), c = 10.854(2) Angstrom, beta = 90.46 (2)degrees and V = 1310.3 Angstrom(3). For Z = 4 and F.W. = 274.32 the calculated density is 1.39 g/cm(3). The structure was solved by direc t method, and refined by full-matrix least-squares methods to R = 0.03 4 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 -NSO(2)Ph group is linked with the fused-6/5 H-bonde d 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 s uch as Cu(II) or Ni(II).