Abstract
Abstract We have measured Raman and optical reflectance spectra of the mixed valence gold complex Cs2Au(I)Au(III)Cl6 under pressure. The compound shows two resonant Raman modes peaked at 297 cm−1 and 323 cm−1, which are assigned to stretching vibrations of the bridging chlorines about the gold ions. The 297 cm−1 mode is found to decrease continuously in frequency for pressures up to at least 8 GPa, indicating a continuous increase of the shorter Au-Cl bond lengths. The pressure dependence of the optical reflectivity shows that metallization occurs at pressures near 65 GPa. Furthermore, we find evidence for a structural phase transition near 10 GPa. We discuss the results in light of previous high-pressure x-ray and Mossbauer studies.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
