Substituted ethanes
| Autor: | Rose A. Carney, Forrest F. Cleveland, Edward A. Piotrowski, Arnold G. Meister, Julian H. Braun |
|---|---|
| Rok vydání: | 1961 |
| Předmět: |
Carbon disulfide
Materials science Infrared Infrared spectroscopy Potential energy Molecular physics Atomic and Molecular Physics and Optics symbols.namesake chemistry.chemical_compound chemistry symbols Rectangular potential barrier Molecule Physical and Theoretical Chemistry Raman spectroscopy Spectroscopy Matrix method |
| Zdroj: | Journal of Molecular Spectroscopy. 7:209-222 |
| ISSN: | 0022-2852 |
| DOI: | 10.1016/0022-2852(61)90353-8 |
| Popis: | Raman displacements, semiquantitative relative intensities, and quantitative depolarization factors as well as the wave numbers and estimated relative intensities for the infrared bands in the region 200 to 3000 cycles/cm were obtained for C2Cl6 in a carbon tetrachloride solution and for C2Br6 in 1,4-dioxane and carbon disulfide solutions. Vibrational assignments consistent with the depolarization data, infrared spectra, and selection rules were made for C2F6, C2Cl6, and C2Br6. Reasonable sets of potential energy constants were determined for the three molecules by use of the Wilson FG matrix method and the procedure of Gold et al. Finally, the thermodynamic properties—heat content, free energy, entropy, and heat capacity—were calculated from the spectral and structural data for 12 temperatures from 100 to 1000°K. In these calculations the contribution of the torsional frequency was included for C2F6 and C2Cl6 but not for C2Br6 since the potential barrier hindering the internal rotation of this molecule was not known. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|