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

Single-crystal X-ray diffraction in situ allowed to find the structure of l-serine III at 8.0 GPa. High-resolution X-ray powder diffraction data up to 13.5 Gpa with a synchrotron radiation source suggest the formation of a superstructure with a and c parameters tripled as compared with the single-crystal model.