Electron Affinities of Atoms, Molecules, and Radicals

Negative ions, mass selection, and photoelectrons

“…Since then, a large number of accurate EAs have been determined with this technique for atoms and molecules. Overviews have been given by several groups (Christodoulides et al, 1984;Hotop & Lineberger, 1985;Janousek & Brauman, 1979;Corderman & Lineberger, 1979) active in this area.…”

“…Finally, the development of the zero-kinetic-energy photoelectron spectroscopy (ZEKE) for anions (Kitsopoulos et al, 1989;Ganteför et al, 1990;Drechsler et al, 1994b) based on the cation 4 neutral ZEKE method (Müller-Dethlefs et al, 1984a;) allowed one to push the energy resolution to the magic limit of 1 cm Ϫ1 . For detailed in-depth information on photodetachment and attachment experiments and data, we refer to review articles such as (Illenberger & Momigny, 1992;Christodoulides et al, 1984;Hotop & Lineberger, 1975;Janousek & Brauman, 1979).…”

Negative ions, molecular electron affinity and orbital structure of cata‐condensed polycyclic aromatic hydrocarbons

“…Until recently, the EA measurements for phenanthrene, an angular isomer of anthracene, were experiencing some experimental difficulties. EA evaluation by different direct or indirect methods gave values within a wide range from −0.02 eV to 0.31 eV . Theoretical estimations of phenanthrene EA varied around 0 eV to either the positive or the negative side, which also made it impossible to reach a definite conclusion as to its value (see ).…”

“…For the PAH molecules one can find numerous literature data on experimental electron affinities, which are often poorly consistent with each other (see data collected, e.g., in, and Table ). In view of this lack of reliable data, the adiabatic EAs for PAH molecules can be assessed using simple regularity EA + IE ≈ 8 eV (consequence of nearly equal electronegativity of PAH molecules), where IE is the vertical ionization energy of the molecule, which is obtained by the highly reproducible and precise method of photoelectron spectroscopy (see Table ).…”

Comment on ‘‘Ab initio calculation of [OH−; e+] system with consideration of electron correlation effect’’ [J. Chem. Phys. 101, 5925 (1994)]

“…[2][3][4][5][6][7] The accepted 8 value, 1.827 61 Ϯ0.000 02 eV, was determined by threshold laser photodetachment. 9 When we use this value in the equation above, we find the binding energy of PsOH is predicted to be Ϫ0.1 eV; i.e., the authors' calculation of the second quantity on the right of Eq.…”