Proton transfer between hydrogen halides and dimethylether in nitrogen matrices. An example of infrared-induced transfer |
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Authors: | L. Schriver A. Loutellier A. Burneau |
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Affiliation: | Laboratoire de Spectrochimie Moléculaire, Université Pierre et Marie Curie, Paris 75005, France |
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Abstract: | The infrared absorption of mixtures of dimethyl ether and hydrogen halide (HX) in nitrogen at 13 K display relatively narrow bands in the range 650–800 cm−1 with an isotopic ratio νH/νD larger than 1.4 and weakly halogen dependent; these features are assigned to the antisymmetric O…H…O stretching within the [(CH3)2 O…H…O(CH3)2]+X− ion pair. With HI—ether mixtures, the intensity of the 660 cm−1 band decreases under infrared irradiation of the matrix, which might be due to the transfer of the proton back to the I− anion. |
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