Acid-base interactions in the methanesulfonic acid-propylene carbonate system |
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Authors: | V D Maiorov G I Voloshenko A P Kirilova N B Librovich |
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Institution: | (1) N. N. Semenov Institute of Chemical Physics, Russian Academy of Sciences, 4 ul. Kosygina, 117977 Moscow, Russian Federation |
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Abstract: | The methanesulfonic acid (MSA)—propylene carbonate (PC) system with component concentrations of 0–100% was studied at 30°C
using the Multiple Attenuated Total Reflection (MATR) IR spectroscopy. The formation of a strong 1∶1 molecular complex of
MSA with PC was established. In the presence of an excess of the acid, a second MSA molecule adds to this complex to give
the molecular complex (2MSA)·PC. When excess propylene carbonate is used, the MSA·PC complex is solvated by a propylene carbonate
molecule. No protonation of the base or formation of complexes with a strong symmetrical H bond was observed. Continuous absorption
was not detected in IR spectra of the solutions.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 2, pp. 313–318 February, 1999. |
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Keywords: | IR spectra acid-base interactions complexes methanesulfonic acid propylene carbonate solutions |
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