Infrared Matrixhyphen;Isolation Studies of BrCN and CICN: Fermi Resonance and Dimer Structure

摘要

The infrared spectra of CICN and BrCN in argon and krypton matrices at 20deg;K have been investigated. There is good evidence that for the monomeric species the bending mode is split by the matrix environment and that the first overtones of these two bending components form a Fermi resonant triad with thev1fundamental. The frequencies and intensities of the unperturbed levels and the Fermi coupling constants have been calculated. The absorption bands due to dimeric species are consistent with a linear or nearly linear configuration for the dimer.