Paramagnetic intermediates in reactions of the components of catalytic systems of the Ziegler type. Reactions of azo and azomethine complexes of Ni(II) with diethylaluminum chloride
The intermediate paramagnetic particles, i.e., radical particles, complexes of Ni(I), and Ni/sub n/(O) aggregates, formed as a result of the reaction of azo and azomethine complexes of Ni(II) with Et/sub 2/AlCl in solvent media (toluene, THF, heptane) have been identified with the aid of ESR. The possibility of the stabilization of reactive intermediate complexes of Ni(I) by organophosphorus ligands (DPPE and TPP) has been demonstrated, and the magnetic-resonance parameters of their adducts have been determined. It has been postulated that the formation of radical particles occurs as a result of the coordination of the nitrogen atoms of the azo or azomethine ligands by the organoaluminum compound followed by splitting of the -N=N or -CH=N bonds.
- OSTI ID:
- 7006209
- Journal Information:
- Sov. J. Coordinat. Chem.; (United States), Vol. 13:6; Other Information: Translated from Koordinatsionnaya Khimiya; 13: No. 6, 797-801(Jun 1987)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALUMINIUM COMPLEXES
CATALYTIC EFFECTS
NICKEL COMPLEXES
CATALYSIS
ELECTRON SPIN RESONANCE
ZIEGLER CATALYST
MATERIALS TESTING
ALUMINIUM CHLORIDES
AZO COMPOUNDS
DISSOCIATION
HEPTANE
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SOLVENTS
PARAMAGNETISM
RADICALS
REACTION INTERMEDIATES
TETRAHYDROFURAN
TOLUENE
ALKANES
ALKYLATED AROMATICS
ALUMINIUM COMPOUNDS
AROMATICS
CATALYSTS
CHLORIDES
CHLORINE COMPOUNDS
COMPLEXES
FURANS
HALIDES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
MAGNETIC RESONANCE
MAGNETISM
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
RESONANCE
SOLVENTS
TESTING
TRANSITION ELEMENT COMPLEXES
400201* - Chemical & Physicochemical Properties