Preparation, Spectral Properties and Biological Activity of Cu(II), Zn(II) and Cd(II) Chelates of 8-Hydroxyquinoline-5-sulfonamides
2014
Ibrahim, S. A. | El-Gahami, M. A. | Mahfouz, R. M. | Farghali, K. A.
The complexes of some quinolinol sulfonamides with Cu(II), Zn(II), and Cd(II) have been synthesized and formulated as [Cu(L)₂(H₂O)₂] and [M(L)₂]nH₂O, M = Zn(II), or Cd(II), n = 0—3 and L = anion of the corresponding ligand. Their structures have been suggested by elemental analysis, electronic and IR spectroscopy, and conductivity measurements. It was found that the sulfonamide ligands are monobasic bidentate ON donors of the quinolinol group. Consequently, the Zn(II) and Cd(II) complexes are formulated as tetrahedral, whereas in Cu(II) complexes a distorted octahedral environment of the metal ion is proposed. It was proven that the metal chelates inhibit and actively affect the germination of wheat seed.
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