Xu J, Krajewski AE, Niu Y, Kiruba GSM, Lee JK. Kinetic hydricity of silane hydrides in the gas phase.
Chem Sci 2019;
10:8002-8008. [PMID:
31853355 PMCID:
PMC6837013 DOI:
10.1039/c9sc02118c]
[Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 07/09/2019] [Indexed: 12/01/2022] Open
Abstract
Gas-phase experimental and computational methods reveal unknown intrinsic hydricity/nucleophilicity and electrophilicity parameters.
Herein, gas phase studies of the kinetic hydricity of a series of silane hydrides are described. An understanding of hydricity is important as hydride reactions figure largely in many processes, including organic synthesis, photoelectrocatalysis, and hydrogen activation. We find that hydricity trends in the gas phase differ from those in solution, revealing the effect of solvent. Calculations and further experiments, including H/D studies, were used to delve into the reactivity and structure of the reactants. These studies also represent a first step toward systematically understanding nucleophilicity and electrophilicity in the absence of solvent.
Collapse