5922-92-9Relevant articles and documents
Interaction between methanol and the Cl-, Br-, I-, NO3-, ClO4-, BF4-, SO3CF3- and PF6- anions studied by FTIR spectroscopy
Kristiansson, Olof,Schuisky, Mikael
, p. 270 - 273 (2007/10/03)
The interaction between methanol and the Cl-, Br-, I-, NO3-, ClO4-, BF4-, SO3CF3- and PF6- anions in dilute dichloromethane solutions has been investigated. The OH stretching vibration was used to monitor the hydrogen bonds formed between the anions and the methanol molecules, providing a direct measure of the hydrogen-bond strength. Concentrations of free and anionbonded methanol molecules were measured and the equilibrium constants calculated. The wavenumber shift and the free energy of hydrogen-bond formation was found to be significantly correlated. For the anions studied it was found that the hydrogen-bond strength increases in the order: PF6- 4- 4- 3CF3- 3- - -. Acta Chemica Scandinavica 1997.