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Transition Metal Chemistry

, Volume 9, Issue 10, pp 372–376 | Cite as

Metal chelates of heterocyclic Nitrogen containing ketones. XV. Five-coordinate nickel(II) and copper(II) complexes with a sulphur-nitrogen tridentate schiff base

  • A. El-Dissouky
  • M. M. Abou-Sekkina
  • M. El-Kersh
  • Adel Z. El-Sonbati
Full Papers

Summary

Complexes of the Schiff base, 2-picolylphenylketone-hydrazine-S-benzyl dithiocarbazate, PPKBzTE, with nickel(II) and copper(II) halides have been prepared and characterized using spectral (1H n.m.r., i.r., uv-visible and e.s.r.) and magnetic measurements. A square pyramidal geometry is assumed for [Ni(PPKBzTE-H)X]2(X=Cl or. Br) and a square planar structure for [Ni(PPKBzTE-H)I]. The spectral studies in inert solvents show the presence of temperature dependent equilibria between tetrahedral and five-coordinate species in the chloro-and bromo-complexes. The interaction of nickel(II) complexes with various heterocyclic nitrogen Lewis bases yielded distorted octahedral 1∶2 adducts. Copper(II) complexes, [Cu3(PPKBzTE)(PPKBzTE-H)Cl5] and [Cu(PPKBzTE-H)Br]2 were separated and associated with a five-coordinate structure. Variable temperature magnetic susceptibility and the spectral studies showed that they are trimeric and dimeric, respectively.

Keywords

Nickel Adduct Ketone Magnetic Susceptibility Schiff Base 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Verlag Chemie GmbH 1984

Authors and Affiliations

  • A. El-Dissouky
    • 1
  • M. M. Abou-Sekkina
    • 2
  • M. El-Kersh
    • 2
  • Adel Z. El-Sonbati
    • 2
  1. 1.Chemistry Department, Faculty of ScienceAlexandria UniversityAlexandriaEgypt
  2. 2.Chemistry Department, Faculty of ScienceTanta UniversityTantaEgypt

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