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Updated: Jun 3, 2026

Line Shape Analysis of Dynamic NMR Spectra for Characterizing Coordination Sphere Rearrangements at a Chiral Rhenium Polyhydride Complex
Published on: July 27, 2022
Using sterics to promote reactivity in fac-Re(CO)3 complexes of some 'non-innocent' NNN-pincer ligands
Sarath Wanniarachchi1, Brendan J Liddle, John Toussaint
1Department of Chemistry, Marquette University, Milwaukee, WI 53201-1881, USA.
Abstract:
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.
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