中国物理B ›› 1995, Vol. 4 ›› Issue (10): 778-782.doi: 10.1088/1004-423X/4/10/007

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RAMAN SCATTERING OF α-ET3(ReO4)2 CHARGE-TRANSFER SALT

刘道志   

  1. a Analysis Center, Tianljin University, Tianjin 300072, China;  b Clarendo Laboratory, Department of Physics, Oxford University, Oxford OX1 3PU, U.K.
  • 收稿日期:1994-11-19 出版日期:1995-10-20 发布日期:1995-10-20

RAMAN SCATTERING OF $\alpha$-ET3(ReO4)2 CHARGE-TRANSFER SALT

LIU DAO-ZHI (刘道志)a, W. HAYESb   

  1. Analysis Center, Tianljin University, Tianjin 300072, China
  • Received:1994-11-19 Online:1995-10-20 Published:1995-10-20

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摘要： We describe the results of Haman studies on C=C stretch modes in α-ET3(ReO4)2 charge-transfer salt with the incident laser beam polarised perpendicular and parallel to the large flat face of plate-like crystal. We have assigned central C=C stretch mode at 1454 cm-1 and ring C=C stretch mode at 1470cm-1. The change in ring C=C stretch vibration was observed at the metal-insulator transition of α-ET3(ReO4)2 on warming due to the distortion of the ET molecules.

Abstract: We describe the results of Haman studies on C=C stretch modes in $\alpha$-ET3(ReO4)2 charge-transfer salt with the incident laser beam polarised perpendicular and parallel to the large flat face of plate-like crystal. We have assigned central C=C stretch mode at 1454 cm-1 and ring C=C stretch mode at 1470cm-1. The change in ring C=C stretch vibration was observed at the metal-insulator transition of $\alpha$-ET3(ReO4)2 on warming due to the distortion of the ET molecules.

中图分类号:  (Organic compounds, polymers)

  • 78.30.Jw
71.30.+h (Metal-insulator transitions and other electronic transitions) 61.66.Hq (Organic compounds)