Rotor in a cage: Infrared spectroscopy of an endohedral hydrogen-fullerene complex.

@article{Mamone2009RotorIA,
  title={Rotor in a cage: Infrared spectroscopy of an endohedral hydrogen-fullerene complex.},
  author={S. Mamone and Min Ge and D. H{\"u}vonen and U. Nagel and A. Danquigny and F. Cuda and M. Grossel and Y. Murata and K. Komatsu and M. H. Levitt and T. R{\~o}{\~o}m and M. Carravetta},
  journal={The Journal of chemical physics},
  year={2009},
  volume={130 8},
  pages={
          081103
        }
}
We report the observation of quantized translational and rotational motion of molecular hydrogen inside the cages of C(60). Narrow infrared absorption lines at the temperature of 6 K correspond to vibrational excitations in combination with translational and rotational excitations and show well-resolved splittings due to the coupling between translational and rotational modes of the endohedral H(2) molecule. A theoretical model shows that H(2) inside C(60) is a three-dimensional quantum rotor… Expand

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