β-Alanine under pressure: towards understanding the nature of phase transitions†
Abstract
We report the unusual behavior of β-alanine under pressure. Depending on the protocol with which pressure was increased, the crystals of β-alanine I after transition to phase II either transformed into monoclinic phase V at approximately 6 GPa or remained orthorhombic at least up to 8 GPa in phase II with a molecular packing very similar to that of phase I.