Crystal Structure of the High Pressure Phase VI of Thiourea

Abstract

Crystal structure of the high pressure phase VI of thiourea, SC(NH₂)₂, has been analyzed at 0.97 GPa, 295 K from X-ray diffraction data; orthorhombic, Pbnm, a=5.503 Å, b=7.138 Å, c=24.788 Å, Z=12, R=0.055 for 351 independent reflections. Displacements of molecules at V-VI phase transition bring about reconstruction of hydrogen bonds network.