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- Title
Formation and properties of Ziegler systems based on nickel bis(dimethylglyoximate) in catalysis of hydrogenation reactions.
- Authors
Titova, Yu.; Belykh, L.; Shmidt, F.
- Abstract
The effect of the nature of the acidoligand in the nickel precursor on the activity of Ziegler systems in hydrogenation of alkenes was characterized qualitatively. The key steps of the reaction of nickel bis (dimethylglyoximate) with triethylaluminum determined by the methods of IR, NMR, and ESR spectroscopy include the reaction between AlEt and the OH group of the dimethylglyoximate ligand, formation of the product of C-alkylation as a result of addition of AlEt to the C=N bond, and the reduction of Ni(II) to Ni(0) complexes. The absence of nickel clusters and a low concentration of coordinatively unsaturated Ni(0) complexes is the most probable reason of low catalytic activity of the studied system in hydrogenation catalysis.
- Subjects
HYDROGENATION; CHEMICAL precursors; ALKENES; ALKYLATION; CATALYSIS synthesis
- Publication
Russian Journal of General Chemistry, 2014, Vol 84, Issue 12, p2413
- ISSN
1070-3632
- Publication type
Article
- DOI
10.1134/S1070363214120111