Anion photoelectron spectroscopy of C3N- and C5N-.
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.
Yen
Terry A
TA
Department of Chemistry, University of California, Berkeley, California 94720, USA.
Garand
Etienne
E
Shreve
Alexander T
AT
Neumark
Daniel M
DM