Ionic nickel(IV)-dimethylglyoxime complexes have been prepared by oxidation of nickel(II)-dimethylglyoxime in alkaline solutions with ferricyanide. A novel base-controlled equilibrium is demonstrated between the monomeric and dimeric nickel(IV)-dimethylglyoxime complexes in solution. The oxidation state of nickel as +4 is confirmed by titration with hydroxylamine salt. The results obtained from the UV/VIS spectrophotometry, titrimetry, infrared and NMR studies are discussed. © 2008 Springer Science+Business Media B.V.

Akella Sivaramakrishna

Department of Chemistry

School of Advanced Sciences

Vellore Campus

Rao V.J.

Muralikrishna U.

Moss J.R.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Transition Metal Chemistry

An unusual base-controlled equilibrium between monomeric and dimeric nickel(IV)-dimethylglyoxime complexes

Journal	Transition Metal Chemistry
ISSN	03404285
Open Access	No