Inorganic Chemistry
Inorganic Chemistry
5 years ago

Zinc Complexes with Cyanoxime: Structural, Spectroscopic, and Catalysis Studies in the Pivaloylcyanoxime–Zn System

Zinc Complexes with Cyanoxime: Structural, Spectroscopic, and Catalysis Studies in the Pivaloylcyanoxime–Zn System
Nikolay Gerasimchuk, G. M. D. M. Rúbio, Anirban Karmakar, Armando J. L. Pombeiro, Adedamola A. Opalade
Reaction of 2-hydroxyimino-4,4-dimethyl-3-oxo-pentanenitrile (HPiCO, pivaloyl-cyanoxime) with zinc sulfate in an aqueous solution results in [Zn(PiCO){H(PiCO)2}(H2O)] (I) and tetranuclear Zn complex [Zn4(μ3−OH)2(PiCO)6(H2O)4] (II). Because of the structural flexibility and multidentate propensity of the pivaloyl-cyanoxime, the complexes may act as a structural model of naturally occurring Zn-containing enzymes. Compound I exhibits efficient catalytic performance for transesterification reaction of various esters in ethanol under mild reaction conditions, classifying it as green catalysis.

Publisher URL: http://dx.doi.org/10.1021/acs.inorgchem.7b01891

DOI: 10.1021/acs.inorgchem.7b01891

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