Decompositions of odd- and even-electron anions derived from deoxy- polyadenylates

Abstract

Radical anions have been formed via electron transfer from multiply charged 5'-d(AAA)-3' and 5'-d(AAAA)-3' anions to CCl3/+. These ions have been isolated in a quadrupole ion trap operated with helium bath gas at a pressure of 1 mtorr and subjected to resonance excitation (i.e., conventional ion trap collisional activation). Collisional activation of the even-electron species of the same charge state formed directly via electrospray was also performed by using essentially identical conditions. The collisional activation data can be compared directly without ambiguity arising from differences in parent ion internal energies and/or dissociation time frames. Both the odd- and even-electron anio..