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https://hdl.handle.net/10316/5082
Título: | Low-temperature infrared spectra and hydrogen bonding in polycrystalline dl-serine and deuterated derivatives | Autor: | Jarmelo, S. Reva, I. Rozenberg, M. Carey, P. R. Fausto, R. |
Palavras-chave: | dl-serine; H-bonding; Low-temperature IR spectra; Isotopic dilution | Data: | 2006 | Citação: | Vibrational Spectroscopy. 41:1 (2006) 73-82 | Resumo: | The FT-IR spectra of polycrystalline dl-serine [[alpha]-amino-[beta]-hydroxypropionic acid; HO-CH2-CH(NH3)+-COO-] and isotopically substituted [ND/ODAlcohol (<10% and >90% D); CD2 (>98% D)] dl-serine were recorded in the range 4000-500Â cm-1 in the temperature range 300-10Â K, and fully assigned. The isotopic-doping/low-temperature methodology, which allows for decoupling of individual proton vibrational modes from the crystal bulk vibrations, was used to estimate the energies of the different H-bonds present in dl-serine crystal. To this end, the frequency shifts observed in both the NH/OH stretching and out-of-plane bending spectral regions (relatively to reference values for these vibrations in non-hydrogen-bonded dl-serine molecules) were used, together with previously developed empirical correlations. The results are compared with available structural data on this amino acid. | URI: | https://hdl.handle.net/10316/5082 | DOI: | 10.1016/j.vibspec.2005.12.013 | Direitos: | openAccess |
Aparece nas coleções: | FCTUC Química - Artigos em Revistas Internacionais |
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filede6d1a03f6eb4ff9b0fb3fb671aefe28.pdf | 494.39 kB | Adobe PDF | Ver/Abrir |
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