A Metalloligand Appended with Thiazole Rings: Heterometallic {Co3+-Zn2+} and {Co3+-Cd2+} Complexes and Their Heterogeneous Catalytic Applications

作者：Bansal Deepak; Hundal Geeta; Gupta Rajeev

来源：European Journal of Inorganic Chemistry, 2015, 2015(6): 1022-1032.

DOI：10.1002/ejic.201403072

• Cobalt
• Zinc
• Cadmium
• Heterogeneous catalysis
• Heterometallic complexes

This work describes a Co3+-based metalloligand containing appended thiazole rings and its reactions with secondary metal ions to produce heterometallic {Co3+-Zn2+} and {Co3+-Cd2+} complexes. Structural studies show that some of the appended thiazole rings from the metalloligand coordinate to secondary metal ions, whereas the remaining ones act as hydrogen-bond acceptors to metal-bound CH3OH or H2O molecules. These heterometallic complexes function as reusable heterogeneous catalysts for the ring-opening reactions of epoxides as well as cyanation and Knoevenagel condensation reactions of aldehydes. The catalytic results illustrate that the microenvironment remains intact during the catalysis and potentially enhances the substrate interaction with the Lewis acidic secondary metal ions.

• 出版日期2015-2