Infrared spectrum of formamide in the solid phase
| Autor: | Nigel J. Mason, V. Hatode, B. G. Nair, B. N. Raja Sekhar, Bhalamurugan Sivaraman |
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| Rok vydání: | 2013 |
| Předmět: |
Models
Molecular Formamide Phase transition Formamides Infrared Chemistry Temperature Analytical chemistry Infrared spectroscopy Atmospheric temperature range Photochemistry Phase Transition Atomic and Molecular Physics and Optics Spectral line Analytical Chemistry chemistry.chemical_compound Phase (matter) Spectroscopy Fourier Transform Infrared Spectroscopy Dimerization Instrumentation |
| Zdroj: | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 105:238-244 |
| ISSN: | 1386-1425 |
| DOI: | 10.1016/j.saa.2012.12.039 |
| Popis: | Infrared spectra of solid formamide are reported as a function of temperature. Solid formamide samples were prepared at 30 K and then annealed to higher temperatures (300 K) with infrared transmission spectra being recorded over the entire temperature range. The NH2 vibrations of the formamide molecule were found to be particularly very sensitive to temperature change. The IR spectra revealed a phase change occurring in solid formamide between 155 and 165 K. Spectral changes observed above and below the phase transition may be attributed to a rearrangement between formamide dimers and the formation of polymers is proposed at higher temperatures. |
| Databáze: | OpenAIRE |
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