Quantifying the Efficiency of CO Capture by Lewis Pairs

Overview

Journal Chem Sci

Publisher Royal Society of Chemistry

Specialty Chemistry

Date 2017 May 30

PMID 28553530

Citations 6

Authors

Jay J Chi

Timothy C Johnstone

Dan Voicu

Paul Mehlmann

Fabian Dielmann

Eugenia Kumacheva

Douglas W Stephan

Affiliations

Soon will be listed here.

Abstract

A microfluidic strategy has been used for the time- and labour-efficient evaluation of the relative efficiency and thermodynamic parameters of CO binding by three Lewis acid/base combinations, where efficiency is based on the amount of CO taken up per binding unit in solution. Neither BuP nor B(CF) were independently effective at CO capture, and the combination of the imidazolin-2-ylidenamino-substituted phosphine (NIPr)P and B(CF) was equally ineffective. Nonetheless, an archetypal frustrated Lewis pair (FLP) comprised of BuP and B(CF) was shown to bind CO more efficiently than either the FLP derived from tetramethylpiperidine (TMP) and B(CF) or the highly basic phosphine (NIPr)P. Moreover, the proposed microfluidic platform was used to elucidate the thermodynamic parameters for these reactions.

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