IR-UV double resonance spectroscopy of xanthine.

@article{Callahan2007IRUVDR,
  title={IR-UV double resonance spectroscopy of xanthine.},
  author={M. Callahan and Bridgit O Crews and A. Abo-riziq and L. Grace and M. de Vries and Zsolt Gengeliczki and T. M. Holmes and G. Hill},
  journal={Physical chemistry chemical physics : PCCP},
  year={2007},
  volume={9 32},
  pages={
          4587-91
        }
}
We present resonant two-photon ionization (R2PI), UV-UV, and IR-UV double resonance spectra of xanthine seeded in a supersonic jet by laser desorption. We show that there is only one tautomer of xanthine which absorbs in the wavelength range of 36 700 to 37 700 cm(-1). The IR-UV double resonance spectrum shows three strong bands at 3444, 3485, and 3501 cm(-1), all of which we assign as N-H stretching vibrations. Comparison of the IR-UV double resonance spectrum with frequencies and intensities… Expand
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