Pressure-induced phase transitions in crystalline L-serine studied by single-crystal and high-resolution powder X-ray diffraction

Boldyreva EV; Sowa H; Seryotkin YV; Drebushchak TN; Ahsbahs H; Chernyshev V; Dmitriev V

Chemical Physics Letters, Vol.429, No.4-6, 474-478, 2006

DOI10.1016/j.cplett.2006.08.092 Export Citation

Pressure-induced phase transitions in crystalline L-serine studied by single-crystal and high-resolution powder X-ray diffraction

Boldyreva EV, Sowa H, Seryotkin YV, Drebushchak TN, Ahsbahs H, Chernyshev V, Dmitriev V

Pressure induces two isosymmetric reversible polymorphic transitions in L-serine related to a junipwise change in the hydrogen bond networks and the conformation of the zwitter-ions. Single-crystal X-ray diffraction in situ allowed to find the structure of L-serine III at 8.0 GPa (the phase was previously reported based on Raman spectra [Kolesnik et al., Doklady Chem. 404 (2005) 169]). High-resolution X-ray powder diffraction data with a synchrotron radiation source suggest the formation of a superstructure with a and c parameters tripled as compared with the single-crystal model. (c) 2006 Elsevier B.V. All rights reserved.