C7H4O2+ and C7H5O2+ ions and the respective neutrals have been investigated by absorption spectroscopy in neon matrixes following mass selection of ions produced from salicylic acid. Three electronic transitions starting at 649.6, 431.0, and 372.0 nm are detected for C7H4O2+ and assigned on the basis of CASPT2 energies and Franck-Condon simulations as the excitations from the X (2)A '' to the 1 (2)A '', 3 (2)A '', and 3 (2)A '' electronic states of 6-(oxomethylene)-2,4-cyclohexadien-1-one ion (A(+)). Absorptions commencing at 366.4 nm are observed for C7H5O2+ and assigned to the 1 (2)A' <- X (2)A' electronic transition of (2-hydroxyphenyl)-methanone ion (J(+)). Neutralization of J(+) leads to the appearance of four absorption systems attributed to the 4 (2)A '', 3 (2)A '', 2 (2)A '', and 1 (2)A '' <- X (2)A '' transitions of J with origin bands 291.3, 361.2, 393.8, and 461.2 nm.
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