Issue 28, 2019

Novel dioxolene nickel complexes with sterically hindered diazabutadienes. Coupling of aza-ligands coordinated to nickel

Abstract

A square-planar bis-o-semiquinonato nickel complex interacts with N,N′-disubstituted 1,4-diazabutadienes-1,3 forming six-coordinate compounds. The X-ray structural study indicates complex geometry to be close to the octahedral. Magnetic properties are determined by metal–ligand ferromagnetic exchange interactions which are promoted by complex geometry. In polar solvents (THF, CH2Cl2, and CHCl3) complexes are partly dissociated into corresponding diazabutadiene-nickel catecholate and free o-quinone. In the case of the most sterically hindered 1,4-bis-(2,6-di-iso-propylphenyl)-2,3-dimethyl-1,4-diazabutadiene-1,3 in n-hexane or toluene the above-mentioned reaction is accompanied by the coupling through the back-bonded methyl groups of diazabutadiene. The organic product of the coupling was eliminated from the complex, isolated and structurally characterized. Taking into account the quantitative yield the coupling reaction is the actual procedure for the synthesis of new potential nitrogen ligands.

Graphical abstract: Novel dioxolene nickel complexes with sterically hindered diazabutadienes. Coupling of aza-ligands coordinated to nickel

Supplementary files

Article information

Article type
Paper
Submitted
27 ožu 2019
Accepted
05 lip 2019
First published
05 lip 2019

Dalton Trans., 2019,48, 10516-10525

Novel dioxolene nickel complexes with sterically hindered diazabutadienes. Coupling of aza-ligands coordinated to nickel

M. P. Bubnov, V. K. Cherkasov, I. A. Teplova, N. O. Druzhkov, I. D. Grishin, E. V. Baranov, A. S. Bogomyakov and Gleb. A. Abakumov, Dalton Trans., 2019, 48, 10516 DOI: 10.1039/C9DT01309A

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements