title: Anion photoelectron spectroscopy of C3N- and C5N-.
abstract: Anion photoelectron spectroscopy of C(3)N(-) and C(5)N(-) is performed using slow electron velocity-map imaging (SEVI) and field-free time-of-flight (TOF), respectively. The SEVI spectrum exhibits well-resolved vibrational transitions from the linear C(3)N(-) ground state to the corresponding C(3)N ground state. The TOF spectrum comprises transitions arising from the linear C(5)N(-) ground state to the corresponding neutral ground and excited states. This study yields the adiabatic electron affinities of C(3)N and C(5)N to be 4.305 +/- 0.001 and 4.45 +/- 0.03 eV, respectively, and a term value of 560 +/- 120 cm(-1) for the A(2)Pi state of C(5)N. Vibrational frequencies for the degenerate cis and trans bending modes of C(3)N(-) are also extracted.
authors.affiliation: Department of Chemistry, University of California, Berkeley, California 94720, USA.
authors.forename: Terry A
authors.initials: TA
authors.lastname: Yen
authors.forename: Etienne
authors.initials: E
authors.lastname: Garand
authors.forename: Alexander T
authors.initials: AT
authors.lastname: Shreve
authors.forename: Daniel M
authors.initials: DM
authors.lastname: Neumark