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A Metalloligand Appended with Thiazole Rings: Heterometallic {Co 3+ –Zn 2+ } and {Co 3+ –Cd 2+ } Complexes and Their Heterogeneous Catalytic Applications
Author(s) -
Bansal Deepak,
Hundal Geeta,
Gupta Rajeev
Publication year - 2015
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201403072
Subject(s) - chemistry , thiazole , catalysis , knoevenagel condensation , ring (chemistry) , molecule , cyanation , metal , lewis acids and bases , medicinal chemistry , stereochemistry , organic chemistry
This work describes a Co 3+ ‐based metalloligand containing appended thiazole rings and its reactions with secondary metal ions to produce heterometallic {Co 3+ –Zn 2+ } and {Co 3+ –Cd 2+ } 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 CH 3 OH or H 2 O 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.