Jump to main content
Jump to site search

Issue 44, 2017
Previous Article Next Article

Synthesis and characterization of trimetallic cobalt, zinc and nickel complexes containing amine-bis(benzotriazole phenolate) ligands: efficient catalysts for coupling of carbon dioxide with epoxides

Author affiliations

Abstract

New trimetallic cobalt, nickel and zinc complexes 1–3 coordinated by amine-bis(benzotriazole phenolate) ligands and ancillary acetate groups have been developed for the use of CO2/epoxide coupling. All complexes were structurally characterized by single crystal X-ray crystallography; tri-Co complex 1 is the first solid-state example in which three different geometrical configurations exist in the same benzotriazole phenoxide metal complex. Tri-nuclear complexes 1 and 2 with cobalt and zinc metal centers were demonstrated to be very active catalysts for cycloaddition of cyclohexene oxide with CO2 in the presence of ammonium salt co-catalysts to give cis-cyclohexene carbonate under the conditions of 80 °C and 300 psi initial CO2 pressure. Particularly, tri-cobalt complex 1 was found to efficiently couple CO2 with epoxides showing broad substrate scope, producing the corresponding cyclic organic carbonates with good activities and high selectivities. This is a successful example of catalysis for cyclic carbonate synthesis using one cobalt(II) complex as a homogeneous catalyst.

Graphical abstract: Synthesis and characterization of trimetallic cobalt, zinc and nickel complexes containing amine-bis(benzotriazole phenolate) ligands: efficient catalysts for coupling of carbon dioxide with epoxides

Back to tab navigation

Supplementary files

Article information


Submitted
02 Aug 2017
Accepted
04 Oct 2017
First published
04 Oct 2017

Dalton Trans., 2017,46, 15399-15406
Article type
Paper

Synthesis and characterization of trimetallic cobalt, zinc and nickel complexes containing amine-bis(benzotriazole phenolate) ligands: efficient catalysts for coupling of carbon dioxide with epoxides

C. Li, Y. Su, C. Lin, H. Huang, C. Tsai, T. Lee and B. Ko, Dalton Trans., 2017, 46, 15399
DOI: 10.1039/C7DT02841E

Social activity

Search articles by author

Spotlight

Advertisements