Raman scattering study of [N(CD3)4]2ZnCl4 under hydrostatic pressure

✍ Scribed by J. Henocque; A. Hedoux; J. L. Sauvajol

• Publisher: John Wiley and Sons
• Year: 1993
• Tongue: English
• Weight: 421 KB
• Volume: 24
• Category: Article
• ISSN: 0377-0486
• DOI: 10.1002/jrs.1250240606

✦ Synopsis

Abstract

Raman spectra were measured for [N(CD~3~)~4~]~2~ZnCl~4~ over the pressure range 1–2000 bar. The influence of pressure was studied for the ZnCl~4~ bending modes and the 24 cm^−1^ phonon peak. The pressure dependence of these modes was interpreted having regard to the phase transitions predicted by the temperature–pressure diagram. The pressure dependence of all the recorded spectra highlights a critical behaviour at about 500 bar which does not correspond to any phase transition in the diagram. This phenomenon was interpreted by consideration of the modulation characteristics.