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Probing the Impact of Solvent on the Strength of Lewis Acids via Fluorescent Lewis Adducts.

ABSTRACT: Various methods have been developed to measure the strength of a Lewis acid. A major challenge for these measurements lies in the complexity that arises from variable solvent interactions and perturbations of Lewis acids as their reaction environment changes. Herein, we investigate the impact of solvent effects on Lewis acids for the first time as measured by the fluorescent Lewis adduct (FLA) method. The binding of a Lewis acid in various solvents reveals a measurable dichotomy between both polarity and donor ability of the solvent. While not strictly separable, we observe that the influence of solvent polarity on Lewis acid unit (LAU) values is distinctly opposite to the influence of donor ability. This dichotomy was confirmed by titration data, illustrating that solvation effects can be appropriately and precisely gauged by the FLA method.

SUBMITTER: Laturski AE

PROVIDER: S-EPMC10069026 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature

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Probing the Impact of Solvent on the Strength of Lewis Acids via Fluorescent Lewis Adducts.

Laturski Amy E AE Gaffen Joshua R JR Demay-Drouhard Paul P Caputo Christopher B CB Baumgartner Thomas T

Precision chemistry 20230209 1

Various methods have been developed to measure the strength of a Lewis acid. A major challenge for these measurements lies in the complexity that arises from variable solvent interactions and perturbations of Lewis acids as their reaction environment changes. Herein, we investigate the impact of solvent effects on Lewis acids for the first time as measured by the fluorescent Lewis adduct (FLA) method. The binding of a Lewis acid in various solvents reveals a measurable dichotomy between both pol ...[more]

PMID: 37025975

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