Sapsford, Joshua S. and Csokas, Daniel and Scott, Daniel J. and Turnell-Ritson, Roland C. and Piascik, Adam D. and Papai, Imre and Ashley, Andrew E. (2020) Establishing the Role of Triflate Anions in H-2 Activation by a Cationic Triorganotin(IV) Lewis Acid. ACS CATALYSIS, 10 (14). pp. 7573-7583. ISSN 2155-5435,
Full text not available from this repository. (Request a copy)Abstract
Cationic Lewis acids (LAs) are gaining interest as targets for frustrated Lewis pair (FLP)-mediated catalysis. Unlike neutral boranes, which are the most prevalent LAs for FLP hydrogenations, the Lewis acidity of cations can be tuned through modulation of the counteranion; however, detailed studies on such anion effects are currently lacking in the literature. Herein, we present experimental and computational studies which probe the mechanism of H-2 activation using iPr(3)SnOTf (1-OTf) in conjunction with a coordinating (quinuclidine; qui) and non-coordinating (2,4,6-collidine; col) base and compare its reactivity with {iPr,Sn.base}{Al[OC(CF3)(3)](4)} (base = qui/col) systems which lack a coordinating anion to investigate the active species responsible for H-2 activation and hence resolve any mechanistic roles for OTf- in the iPr(3)SnOTf-mediated pathway.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | FREE CATALYTIC-HYDROGENATION; H BOND ACTIVATION; PAIR HYDROGENATION; FACILE PROTOCOL; SI-H; REACTIVITY; SALTS; BORYLATION; REDUCTION; CHEMISTRY; frustrated Lewis pair; hydrogen activation; anion; tin; stannylium |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Prof. Dr. Robert Wolf |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 Mar 2021 08:05 |
| Last Modified: | 18 Mar 2021 08:05 |
| URI: | https://pred.uni-regensburg.de/id/eprint/44195 |
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