Vibrational relaxation process of polyatomic molecules adsorbed in zeolites

Ken Onda, Michio Yaginuma, Akihide Wada, Kazunari Domen, Chiaki Hirose

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The vibrational relaxation lifetimes of the CO stretching mode of Cr(CO)6 and Mo(CO)6 adsorbed in the cage of the HY, DY and NaY-type zeolites were measured at various temperature by pump-probe method using picosecond infrared laser pulses. It was shown by comparing the lifetimes that the accepting modes include both the vibrational modes of the metal carbonyl and those associated with the cations on the zeolite surface. The analysis of the temperature dependence of the lifetimes revealed that the number of the excited accepting modes are four with their energy lying around 500 cm-1.

Original languageEnglish
Pages (from-to)321-324
Number of pages4
JournalLaser Chemistry
Issue number1-4
Publication statusPublished - 1999
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Spectroscopy


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