Gas phase negative ion chemistry of alkylchloroformates. A convenient method for bimolecular generation of chloride ion adducts and determination of chloride affinities from ion cyclotron resonance thermal equilibrium measurements
- 1 April 1984
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 62 (4) , 675-679
- https://doi.org/10.1139/v84-113
Abstract
A new method for production of chloride ion adducts, MCl−, via a sequence of bimolecular ion molecule reactions involving chloroformate esters is described. These reactions have been used in trapped-ion ion cyclotron resonance thermal equilibrium studies to determine the relative chloride ion affinities of twenty compounds with Cl− binding energies in the range 10–25 kcal mol−1. The present results are found to be in good agreement with chloride affinities obtained by other methods. The resulting chloride affinity scale establishes a convenient framework for the systematic investigation of effects of molecular structure and chemical properties on the binding energy of Cl− to both Lewis and Brønsted acids.Keywords
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