Reversible Control of Crystalline Rotors by Squeezing Their Hydrogen Bond Cloud Across a Halogen Bond-Mediated Phase Transition

cg-2014-002978 0014

Cryst. Growth Des., 2014, 14 (7), pp 3375–3383
 

Abrupt switching of halogen-bonded rotators’ dynamics at 145 K from a very low-energy equilibrium state and ultrafast rotation to a higher-energy state associated with a slower motion is due to a cooperative modulation of the C−Hrotator···Istator hydrogen bond cloud across a C−Istator···Istator−C halogen bond-mediated phase transition.

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