Distonic ion
From Mass Spec Terms
A radical cation or anion in which the charge site and the spin charge (unpaired electron) cannot be both formally located in the same atom or group of atoms, as opposed to the electronic configuration of conventional ions for which both sites can be placed in the same atom. For instance, .CH2-OH2+ is a distonic ion whereas for its conventional isomer, that is, the radical cation of methanol, CH3OH+., the charge and spin sites are formally located at the O atom.
