872885-10-4Relevant academic research and scientific papers
1,2-Diphosphonium Dication: A Strong P-Based Lewis Acid in Frustrated Lewis Pair (FLP)-Activations of B-H, Si-H, C-H, and H-H Bonds
Holthausen, Michael H.,Bayne, Julia M.,Mallov, Ian,Dobrovetsky, Roman,Stephan, Douglas W.
, p. 7298 - 7301 (2015/06/30)
A highly Lewis acidic diphosphonium dication [(C10H6)(Ph2P)2]2+ (1), in combination with a Lewis basic phosphine, acts as a purely phosphorus-based frustrated Lewis pair (FLP) and abstracts hydride from [HB(C6F5)3]- and Et3SiH demonstrating the remarkable hydridophilicity of 1. The P-based FLP is also shown to activate H2 and C-H bonds.
Bypassing a highly unstable frustrated Lewis pair: Dihydrogen cleavage by a thermally robust silylium-phosphine adduct
Herrington, Thomas J.,Ward, Bryan J.,Doyle, Laurence R.,McDermott, Joe,White, Andrew J. P.,Hunt, Patricia A.,Ashley, Andrew E.
supporting information, p. 12753 - 12756 (2015/05/20)
The thermally robust silylium complex [iPr3Si-PtBu3]+[B(C6F5)4]- (1) activates H2/D2 at 90 °C (PhCl); no evidence for dissociation into the separated Lewis pair is found. DFT calculations show H2 cleavage proceeds via Si-P bond elongation to form an encounter complex directly from the adduct, thus avoiding the non-isolable iPr3Si+-PtBu3 FLP. This journal is
Activation of hydrogen and hydrogenation catalysis by a borenium cation
Farrell, Jeffrey M.,Hatnean, Jillian A.,Stephan, Douglas W.
supporting information, p. 15728 - 15731,4 (2020/08/24)
The readily prepared borenium salt [(IiPr2)(BC8H 14)][B(C6F5)4] (2) [IiPr2 = C3H2(NiPr)2] is shown to activate H 2 heterolytically in the presence of tBu3P. Compound 2 also acts as a catalyst for the metal-free hydrogenation of imines and enamines at room temperature.
