Crystal-structure properties and the molecular nature of hydrostatically compressed realgar
@article{Hejny2012CrystalstructurePA, title={Crystal-structure properties and the molecular nature of hydrostatically compressed realgar}, author={Clivia Hejny and Raffaela Sagl and Daniel M. T{\"o}bbens and Ronald Miletich and Manfred Wildner and L. Nasdala and Angela Ullrich and Tonci Balic-Zunic}, journal={Physics and Chemistry of Minerals}, year={2012}, volume={39}, pages={399-412} }
The structure of realgar, As4S4, and its evolution with pressure have been investigated employing in situ X-ray diffraction, optical absorption and vibrational spectroscopy on single-crystal samples in diamond-anvil cells. Compression under true hydrostatic conditions up to 5.40 GPa reveals equation-of-state parameters of V0 = 799.4(2.4) Å3 and K0 = 10.5(0.4) GPa with $$K_0^\prime$$ = 8.7. The remarkably high compressibility can be attributed to a denser packing of the As4S4 molecules with…
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