Abstract
Two cyclometalated ruthenium polypyridyl complexes bearing novel Sb(III)- and Sb(V)-substituted phenylpyridine ligands have been synthesized and their photophysical and electrochemical properties studied. The influence of a strongly electron-withdrawing and Lewis acidic Sb(V) substituent on the cyclometalating ligand resulted in marked changes in the absorption spectrum and electrochemical profile of the complex. These effects have been utilized as a strategy for anion sensing, in which coordination of fluoride or cyanide anions at the Sb(V) substituent can be observed both spectroscopically and electrochemically.
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