Pulse irradiated samples of CFCl3 in liquid methylcyclohexane (MCH) at low temperatures exhibit an optical absorption with lambda(max) at 435 nm. From extensive scavenger studies with variation of dose, temperature, and solution composition, it is obvious that the 435-nm species has both a cation and an anion as precursor and behaves itself as a positive species. It is assigned to the cation CFCl2+, produced by charge transfer from the solvent radical cation to the fragment radical CFCl2. from CFCl3- anion dissociation. The absorption is attributed to a charge-transfer band between CFCl2+ and a solvent (or solute) molecule. Except for the very early time, the CFCl2+ cation disappears at lower doses by first-order kinetics up to four half-lives dependent on temperature, much slower than expected from geminate ion recombination, with k(l)(143 K) = (4.5 +/- 0.6) X 10(3) s-1. The corresponding Arrhenius parameters are very low (E(act) = 12.6 +/- 1.0 kJ/mol, log A = 8.2 +/- 0.4). It is concluded that CFCl2+ and Cl- on recombination are forming an ion pair with the CFCl2+-absorber remaining unperturbed within the ion pair. The ion pair reacts with quadricyclane (Q), methyltetrahydrofuran (MTHF), and also with solvent radicals, the latter initiating a dose effect on the ion pair lifetime for higher doses. The rate constant with Q at 143 K is (8.7 +/- 0.4) X 10(5) M-1 s-1. The ion pair reactivity, as well as the very low preexponential factor, is difficult to explain in the context of contact ion pairs. Together with further arguments, it is concluded that the ion pair (CFCl2+ parallel-to Cl-)solv most likely must be solvent separated.