Raman and Infrared Studies of Nucleosides at High Pressures: I. Adenosine
- 1 June 1999
- journal article
- research article
- Published by Taylor & Francis in Journal of Biomolecular Structure and Dynamics
- Vol. 16 (6) , 1159-1167
- https://doi.org/10.1080/07391102.1999.10508324
Abstract
Room temperature Raman and infrared (IR) spectra of crystalline adenosine at pressures between 1 atm and 10 GPa are reported. Vibrational modes were identified through assignments in the literature. Many modes were found to increase in frequency with pressure; however, some irregularities were observed. Discontinuities were observed in numerous Raman and IR modes near 2.5 GPa, indicating a phase transition. The modes associated with the glycosidic bond shift significantly down in frequency near this pressure, suggesting a weakening of the associated bond. The IR modes associated with hydrogen-stretching motions were found to decrease in frequency with pressure.Keywords
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