title: Hylleraas hydride binding energy: diatomic electron affinities.
abstract: Theoretical adiabatic electron affinities are often considered inaccurate because they are referenced to only a single value. Ground state electron affinities for all the main group elements and homonuclear diatomics were identified recently using the normalized binding energy of the hydrogen atom: [0.75420375(3)/2 = 0.37710187(1) eV]. Here we revisit experimental values and extend the identifications to diatomics in the G2-1 set. We assign new ground state electron affinities: (eV) Cl2, 3.2(2); Br2, 2.87(14); CH, 2.1(2); H2, 0.6 ; NH, 1.1, SiH, 1.90. Anion Morse potentials are calculated for H2 and N2 from positive electron affinities and for hyperfine superoxide states for the first time.
authors.affiliation: Baylor College of Medicine, One Baylor Plaza, Houston, TX, 77030, USA, eschen@bcm.edu.
authors.forename: Edward S
authors.initials: ES
authors.lastname: Chen
authors.forename: Herman
authors.initials: H
authors.lastname: Keith
authors.forename: Tristan
authors.initials: T
authors.lastname: Lim
authors.forename: Dang
authors.initials: D
authors.lastname: Pham
authors.forename: Reece
authors.initials: R
authors.lastname: Rosenthal
authors.forename: Charles
authors.initials: C
authors.lastname: Herder
authors.forename: Sunil
authors.initials: S
authors.lastname: Pai
authors.forename: R A
authors.initials: RA
authors.lastname: Flores
authors.forename: Edward C M
authors.initials: EC
authors.lastname: Chen