Abstract
The infrared spectra of the complexes formed between acetic and trifluoroacetic acids and tertiary amines [N(CH3)3, N(C2H5)3] in argon matrices and for two-component solid mixtures of acid and amine have been recorded. The spectra show that both 1 : 1 and 2 : 1 complexes of acetic acid and amine isolated in argon matrices have molecular forms characterized by broad vOH absorption at ≈ 2000 cm–1. In an acidic environment in both highly concentrated argon matrices and in two-component solid mixtures the proton transfer form CH3CO–2⋯H+NR3 was identified. The 2 : 1 complexes of trifluoroacetic acid and amine isolated in argon matrices have an ionic form as identified by the appearance of characteristic carboxylate group absorption. The spectra also suggest that the 1 : 1 complex forms an ion pair in an argon matrix but this is not conclusive.
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Schedule a callMore From: Journal of the Chemical Society, Faraday Transactions 2
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