Infrared spectra of C2H2 under jet-cooled and para-H2 matrix conditions

Ying Chi Lee, V. Venkatesan, Yuan-Pern Lee*, P. Macko, K. Didiriche, M. Herman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


In spectra of jet-cooled C2H2 recorded with an FTIR spectrometer, the ν5, ν4 + ν5, ν3 and ν2 + ν4 + ν5 bands all exhibit an intensity distribution corresponding to ∼6 K for rotation, with no evidence of nuclear spin conversion. Spectra of C2H2 isolated in solid p-H2 show no evidence of rotation of C2H2. The strong interaction between ν3 and ν2 + ν4 + ν5 in the gas phase is diminished in solid p-H2. Lines associated with dimer, trimer and tetramer of C2H2 are identified. Spectral features characteristic of solid state acetylene are observed under jet-cooled conditions.

Original languageEnglish
Pages (from-to)247-251
Number of pages5
JournalChemical Physics Letters
Issue number4-6
StatePublished - 19 Feb 2007

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