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Transition Metal Chemistry

, Volume 25, Issue 6, pp 715–719 | Cite as

Nitrogen-donor base adducts of bis(O,O′-di-isoamyldithiophosphato)nickel(II)

  • Viktor Machala
  • Zdeněk Trávníček
  • Zdeněk Šindelář
  • Libor Kvítek
  • Jaromír Marek
Article

Abstract

A series of NiII complexes with the O,O′-di-isoamylester of dithiophosphoric acid and nitrogen-donor ligands of composition [Ni(i-Am2dtp)2(L)]; [dtp = O2PS2; L = 2,2′-bipyridine (bpy); 1,10-phenanthroline (phen); 5-nitro-1,10-phenanthroline (nphen); 4,7-diphenyl-1,10-phenanthroline (baphen); 2,9-dimethyl-1,10-phenanthroline (neo), 2-aminomethylpyridine (amp), 2-(2-aminoethyl)pyridine (aep), 2,2′-dipiridylamine (dpa), 1,2-diaminopropane (1,2-dap) or trans 1,2-diaminocyclohexane (dch)] have been prepared. The compounds have been characterized by elemental analyses (C,H,N,S), electronic and i.r. spectroscopy, magnetic and conductivity measurements and by cyclic voltammetry. The results show that all complexes behave as non-electrolytes in acetone. Electronic spectra and magnetic moments suggest a distorted cis-octahedral geometry around the NiII atom [μeffB ∈ <3.10, 3.40 >], except for [Ni(i-Am2dtp)2(aep)], where the measured temperature dependence of the magnetic susceptibility proved the tetrahedrally coordinated nickel [4.06 μeffB (298 K) – 3.20 μeffB (80 K)]. In the [Ni(i-Am2dtp)2(neo)] complex, the nickel atom is penta-coordinated. The X-ray crystal and molecular structure of [Ni(i-Am2dtp)2(1,2-dap)] has been determined.

Keywords

Nickel Pyridine Adduct Magnetic Susceptibility Cyclic Voltammetry 
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

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Viktor Machala
    • 1
  • Zdeněk Trávníček
    • 1
  • Zdeněk Šindelář
    • 1
  • Libor Kvítek
    • 1
  • Jaromír Marek
    • 2
  1. 1.Department of Inorganic and Physical ChemistryPalacký UniversityOlomoucCzech Republic
  2. 2.Department of Inorganic ChemistryMasaryk UniversityBrnoCzech Republic

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