Freeman, L. A.; Walley, J. E.; Dickie, D. A.; Gilliard Jr., R. J. Low-nuclearity magnesium hydride complexes stabilized by N-heterocyclic carbenes. Dalton Transactions 2019, 48, 17174-17178.
Abstract
Herein we report the synthesis and characterization of dinuclear magnesium–hydride complexes, [(IiPrMe2)Mg(μ-H)(HMDS)]2 [4, IiPrMe2 = N,N′-diisopropyl-2,3-dimethylimidazol-2-ylidine, HMDS = bis(trimethylsilyl)amide] and [(IiPrMe2)Mg(μ-H)(ASCP)]2 (5, ASCP = 2,2,5,5-tetramethyl-2,5-disila-1-azacyclopent-1-yl). Compounds 4 and 5 exhibit the lowest nuclearity of any carbene–magnesium hydride complex to date.