Persistent contact ion pairs (CIPs) have been obtained by one-photon-induced electron transfer from N,N,N',N'-tetramethyl-p-phenylenediamine (TMPD) to tetrachloromethane (CCl4) in solid argon, in addition to TMPD.* free radical cations (FRCs) generated by two-photon ionization of TMPD as the primary process. The first UV/VIS absorption band of the CIPs is tentatively explained on the basis of the corresponding band of the FRCs.