Knowledge Bank

Raman spectra of the $SbF6-,AsF6-$, and $BF4-$ salts of $ClF2+$ show that the revised vibrational assignments and force constants reported recently$\mathrm{<mrow\; data-mjx-texclass="ORD">1</mrow>}$ are incorrect. The bending frequency is $385cm-1$. Similarly Raman spectra show that the symmetrical structure reported for the $ClFCl+$ $cation2$ is incorrect. A strong Raman line at $744cm-1$ not seen in the infrared shows that the cation is the unsymmetrical $ClClF+$. The $Cl3+$ cation is described and simple valence force field constants are given for all three cations.