Effect of Pressure on Crystalline L- and DL-Serine: Revisited by a Combined Single-Crystal X-Ray Diffraction at a Laboratory Source and Polarized Raman Spectroscopy Study
Acta Crystallographica Section B. Structural Science (up to 2013)
, E-ISSN: 1600-5740
||hydrogen bonds; amino acids; high pressure; Raman spectroscopy; single-crystal diffraction at a laboratory source
Institute of Solid State Chemistry and Mechanochemistry SB RAS, Novosibirsk, Russian Federation
REC-008 Novosibirsk State University, Novosibirsk, Russian Federation
Institute of Inorganic Chemistry SB RAS, Novosibirsk, Russian Federation
Information on the effect of pressure on hydrogen bonds, which could be derived from single-crystal X-ray diffraction at a laboratory source and polarized Raman spectroscopy, has been compared. l-Serine and dl-serine were selected for this case study. The role of hydrogen bonds in pressure-induced phase transitions in the first system and in the structural stability of the second one are discussed. Non-monotonic distortion of selected hydrogen bonds in the pressure range below 1-2 GPa, a change in the compression mechanism at 2-3 GPa, and the evidence of formation of bifurcated N - H⋯O hydrogen bonds in dl-serine at 3-4 GPa are considered. © 2012 International Union of Crystallography Printed in Singapore - all rights reserved.