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- Title
Reduction and Hydrogenation of a Diazene by a (β-Diketiminato)nickel Hydrazide.
- Authors
Köthe, Claudia; Metzinger, Ramona; Limberg, Christian
- Abstract
A (β-diketiminato)nickel(II) hydrazido(1-) complex [L tBuNi(η2-N2H3)], { 1, L tBu = [HC(C tBuNC6H3{ iPr}2)2]-} has been obtained by treatment of [L tBuNiBr] with hydrazine. In a reaction of 1 with two equivalents of the azo compound diisopropyl azodicarboxylic ester (adc-O iPr) the Ni(N2H3) entity acts as both a hydrogenating and a reducing agent: diisopropyl hydrazidodicarboxylate (hdc-O iPr) is formed, and more adc-O iPr is reduced by two electrons. The resulting (adc-O iPr)2- is found as a ligand in the ultimate nickel product complex, the trinuclear nickel(II) compound [L tBuNi(μ-adc-O iPr)Ni(μ-adc-O iPr)NiL tBu] ( 2), in which two L tBuNi+ units are linked by a [NiII(adc-O iPr)2]2- moiety. The hypothesis that L tBuNiI species are acting as intermediates was supported by the independent finding that 2 can also be obtained by reaction of [L tBuNi(OEt2)] with adc-O iPr.
- Subjects
DIAZENES; HYDROGENATION; CHEMICAL reduction; HYDRAZINES; ORGANIC compounds
- Publication
European Journal of Inorganic Chemistry, 2013, Vol 2013, Issue 22/23, p3937
- ISSN
1434-1948
- Publication type
Article
- DOI
10.1002/ejic.201300064