Donor Strength Determination of Anionic Ligands.

Authors :: Huynh HV
Leung JN
Lam TT
Source :: Inorganic chemistry [Inorg Chem] 2023 Aug 28; Vol. 62 (34), pp. 13902-13909. Date of Electronic Publication: 2023 Aug 12.
Publication Year :: 2023
Abstract: 14 new gold(I) NHC complexes of the type [AuX( <superscript> i </superscript> Pr <subscript>2</subscript> -bimy)] ( <superscript> i </superscript> Pr <subscript>2</subscript> -bimy = 1,3-diisopropylbenzimidazolin-2-ylidene) have been prepared and fully characterized. These complexes and their reported analogues were used to systematically compare and rank the donating abilities of overall 34 anionic X-type donors by <superscript>13</superscript> C NMR spectroscopy. Specifically, the carbene chemical shift of the <superscript> i </superscript> Pr <subscript>2</subscript> -bimy ligand was found to be responsive to the ligand X spanning an overall range Δδ > 37 ppm between the strongest and weakest donor in this study.