The photodissociation spectrum of (C6H6)2+ is obtained from the yields of fragment C6H6+ ion as a function
of photodissociation wavelength in the 400–1400 nm region. Two bands at 440 and 580 nm are attributed
to the C ← X and the B ← X local excitation (LE) bands, respectively. Both the most intense band at
920 nm and relatively weak one at 1160 nm are assigned to charge resonance (CR) bands. The red-shift
of the B ← X band from that of C6H6+ and the cross sections at the CR bands much larger than those
at the LE bands are consistent with a sandwich structure for (C6H6)2+. The appearance of the two CR
bands is explained on the basis of displaced sandwich structures for (C6H6)2+.