Vibrationally resolved photoelectron spectroscopy of oligothiophene radical anions

Vibrational cooling in a cold ion trap: vibrationally resolved photoelectron spectroscopy of cold C60(-) anions.

We demonstrate vibrational cooling of anions via collisions with a background gas in an ion trap attached to a cryogenically controlled cold head (10-400 K). Photoelectron spectra of vibrationally cold C60(-) anions, produced by electrospray ionization and cooled in the cold ion trap, have been obtained. Relative to spectra taken at room temperature, vibrational hot bands are completely elimina...

Vibrationally resolved photofragment spectroscopy of FeO

We report the first vibrationally resolved spectroscopic study of FeO. We observe the 0←0 and 1←0 bands of a S←X S transition at 28 648.7 and 29 311 cm. Under slightly modified source conditions the 1←1 transition is observed at 28 473 cm. In addition to establishing an upper limit D0 (Fe1–O!<342.7 kJ/mol, our results give the first experimental measurements of the vibrational frequencies in bo...

Photoelectron spectroscopy of nickel-benzene cluster anions.

(Nickel)(n)(benzene)(m) (-) cluster anions were studied by both mass spectrometry and anion photoelectron spectroscopy. Only Ni(n)(Bz)(m) (-) species for which n > or =m were observed in the mass spectra. No single-nickel Ni(1)(Bz)(m) (-) species were seen. Adiabatic electron affinities, vertical detachment energies, and second transition energies were determined for (n,m)=(2,1), (2,2), (3,1), ...

Ultraviolet Photoelectron Spectroscopy of Organic Anions

Photoelectron Spectroscopy of Benzoquinonide and Dehydrobenzoquinone Anions

The 364 nm photoelectron spectra of the dehydrobenzoquinone (1•-) and benzoquinonide (2-) anions are reported. For 1•-, the unambiguous assignment of the origin peak yields an electron affinity (EA) of 1.859 ( 0.005 eV. Several vibrational modes of 1 are also reported. Another minor feature at higher electron binding energy is also observed in the spectrum of 1•-. This band does not contain any...