物理化学学报 >> 1988, Vol. 4 >> Issue (04): 415-418.doi: 10.3866/PKU.WHXB19880418

研究简报 上一篇    下一篇

SF6在低温Ar基体中的红外光谱研究

郑企克; 余敏; 周平   

  1. 复旦大学激光化学研究室
  • 收稿日期:1986-12-13 修回日期:1987-05-20 发布日期:1988-08-15
  • 通讯作者: 郑企克

MATRIX ISOLATION INFRARED OF SF6 IN SOLID ARGON

Zheng Qike; Yu Min; Zhou Ping   

  1. Laser Chemistry Laboratory; Fudan University; Shanghai
  • Received:1986-12-13 Revised:1987-05-20 Published:1988-08-15
  • Contact: Zheng Qike

Abstract: Infrared spectra of SF_6 trapped in cryogenic matrix of argon have been measured. Five peaks are observed at the frequencies of 938.51, 938.05, 937.55, 939.82 and 936.22 cm~(-1) for the v_3 mode. Varying the concentration of SF_6 in argon matrix and diffusion studies indicate that the 937.55 cm~(-1) peak is due to SF_6 aggregate and the others arise from monomer. The changes in relative intensities with annealing show that there are at least three different trapping sites for monomeric SF_6 in argon lattice. The result that the increase in intensity of the peak at 938.03 cm~(-1) parallels the decrease in that of the peak at 938.51 cm~(-1) implies a temperature-induced-change in the site population.