Format of Original
The Royal Society of Chemistry
Original Item ID
Two new redox active ligands based on di(2-(3-organopyrazolyl)-p-tolyl)amine have been prepared in order to investigate potential effects of steric bulk on the structures, electronic properties, or reactivity of tricarbonylrhenium(I) complexes. Replacing the hydrogens at the 3-pyrazolyl positions with alkyl groups causes significant distortion to the ligand framework due to potential interactions between these groups when bound to a fac-Re(CO)3 moiety. The distortions effectively increase the nucleophilic character of the central amino nitrogen and ligand-centered reactivity of the metal complexes.
Wanniarachchi, Sarath; Liddle, Brendan J; Toussaint, John; Lindeman, Sergey; Bennett, Brian; and Gardinier, James R., "Using Sterics to Promote Reactivity in fac-Re(CO)3 Complexes of Some ‘Non-Innocent’ NNN-Pincer Ligands" (2011). Physics Faculty Research and Publications. 50.