| Autor: | D. K. Buslov, E. G. Tarakanova, G. V. Yukhnevich, N. I. Sushko, V. F. Sukhoverkhov |
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| Rok vydání: | 2003 |
| Předmět: | |
| Zdroj: | Russian Chemical Bulletin. 52:1280-1288 |
| ISSN: | 1066-5285 |
| Popis: | The IR spectra and densities of MeOH—HF liquid mixtures were measured for component molar ratios ranging from 12 : 1 to 1 : 3. The IR spectra of all of the solutions exhibit bands with maxima at 3500, 2600, and 1800 cm–1 and continuous absorption (CA) in the region of 3500—1300 cm–1. The intensities of these bands and the CA increase with an increase in the HF concentration. A similar behavior was found for the difference between the experimental solution density and the additive sum of the solution component densities. Ab initio SCF calculations of the (MeOH)5–n (HF) n cyclic complexes (n = 0—5) were performed using the 6-31G basis set. The observed properties of MeOH—HF liquid mixtures may be due to the formation of heterocomplexes with a stable cyclic fragment consisting of more than four MeOH and HF molecules. |
| Databáze: | OpenAIRE |
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