Abstract
Data for the characteristic bands of cyclic ethers are reviewed. The infrared spectra of a number of 2-mono- and 2, 5-di-substituted derivatives of tetrahydrofuran are investigated. Absorption bands at about 900 cm−1 are related to pulsation vibrations, and those at about 1200 cm−1 to antisymmetric skeletal vibrations, of the tetrahydrofuran ring. It is shown that to confirm the presence of a tetrahydrofuran ring in a molecule, it is necessary to take into account not only the band of valence antisymmetric vibrations of the group C-O-C (ν asC-O-C 1075 cm−1), but also bands due to ring pulsation vibrations (ring symmetric valence vibrations ν ssk ∼ 900 cm1).
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Kilimov, A.P., Svechnikova, M.A., Shevchenko, V.I. et al. Infrared spectra of cyclic ethers and their derivatives. Chem Heterocycl Compd 3, 467–471 (1967). https://doi.org/10.1007/BF00481572
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DOI: https://doi.org/10.1007/BF00481572