The effects of halogen elements on the opening of an icosahedral B12 framework.

  title={The effects of halogen elements on the opening of an icosahedral B12 framework.},
  author={Liangfa Gong and Wei Li and Edison Osorio and Xinmin Wu and Thomas Heine and Lei Liu},
  journal={The Journal of chemical physics},
  volume={147 14},
The fully halogenated or hydrogenated B12X122- (X = H, F, Cl, Br and I) clusters are confirmed to be icosahedral. On the other hand, the bare B12 cluster is shown to have a planar structure. A previous study showed that a transformation from an icosahedron to a plane happens when 5 to 7 iodine atoms are remained [P. Farràs et al., Chem. - Eur. J. 18, 13208-13212 (2012)]. Later, the transition was confirmed to be seven iodine atoms based on an infrared spectroscopy study [M. R. Fagiania et al… 
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