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Charge exchange technique has been used to detect the presence of long-lived excited electronic states of trans-, cis-, and 1,1-C2H2Cl2+·. The B̃ states of the three cations which are formed by removal of an electron from an in-plane chlorine nonbonding orbital of the corresponding neutrals have been found to have long lifetimes (tens of microseconds or longer). Whether the à states formed by removal...
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