ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Intermediate radical products formed in the catalytic systems of nickel with organometallic compounds

A. Staško

Department of Physical Chemistry, Slovak Technical University, CS-812 37 Bratislava

Abstract:  The investigations of paramagnetic products formed in the catalytic systems of nickel with organometallic compounds performed by e.s.r. and other methods in author's laboratory are summarized. This involves Ni(II), Ni(I), and Ni(0) species, new series of anion radicals of various chelate ligands and their products (ß diketonates, carboxylates, sulfones, ketyl radicals, etc.). The influence of solvents, organometallic compounds, transition metals, and the counter ions of anion radicals on their stability and distribution of unpaired  aryl (Ar) and alkyl (R) ketyl radicals (Ar—, ^-О—Ar—)CO^-(Ar, R) shows an expressive push as well as pull effect. Nickel mediates the transfer of electron and stabilizes the intermediate products in form of their anion radicals. New method in the generation of anion radicals of various substrates by means of organometallic compounds was developed.

Full paper in Portable Document Format: 371a95.pdf

Chemical Papers 37 (1) 95–137 (1983)