Jump to main content
Jump to site search


Nickel Complexes of Ligands Derived from (o-Hydroxyphenyl) Dichalcogenide: Delocalised Redox States of Nickel and o-Chalcogenophenolate Ligand

Abstract

Two monoanionic nickel complexes Bu4N[Ni(LSeO)2] (1) and Bu4N[Ni(LSO)2] (2) (H2LSeO = 3,5-di-tert-butyl-2-hydroxyselenophenol and H2LSO = 3,5-di-tert-butyl-2-hydroxythiophenol) were synthesised by reductive cleavage of the respective 2,2´-dichalcogenobis(4,6-di-tert-butylphenol) (H2LX-X ; X = Se, S) with nickel(II) salts. Crystal structures of 1 and 2 confirm the reductive X–X bond cleavage with concomitant formation of the corresponding monoanionic square planar complex, where quinoidal distortions of the aromatic rings are observed. The monoanionic complexes (1 and 2) are paramagnetic (S = ½) exhibiting rhombic EPR signals, and the g anisotropies are well-correlated with the spin-orbit coupling of chalcogenides. The spectral data indicate that the ligands H2LXO in 1 and 2 are redox non-innocent and stabilise the square planar S = ½ nickel complexes with highly delocalised unpaired electron. DFT calculations further support the delocalised electronic structures of the nickel complexes.

Back to tab navigation

Supplementary files

Publication details

The article was received on 21 Aug 2019, accepted on 25 Oct 2019 and first published on 25 Oct 2019


Article type: Paper
DOI: 10.1039/C9DT03413G
Dalton Trans., 2019, Accepted Manuscript

  •   Request permissions

    Nickel Complexes of Ligands Derived from (o-Hydroxyphenyl) Dichalcogenide: Delocalised Redox States of Nickel and o-Chalcogenophenolate Ligand

    S. Banerjee, D. Sheet, S. Sarkar, P. Halder and T. K. Paine, Dalton Trans., 2019, Accepted Manuscript , DOI: 10.1039/C9DT03413G

Search articles by author

Spotlight

Advertisements