화학공학소재연구정보센터
Journal of Chemical Physics, Vol.108, No.3, 830-837, 1998
Photoelectron spectroscopy of OH-(N2O)(n=1-5)
The 351 nm photoelectron spectra of OH-(N2O)(n), n=1-5, are reported. Each spectrum is composed of a single broad feature that shifts toward higher electron binding energy as the number of solvent molecules increases. Analysis of OH-(N2O) spectra at ion temperatures of 200 and 300 K shows that there is significant intensity in the 0(0)(0) transition, and that transitions to the dissociative region of the OH + N2O potential energy surface are also accessed. The electron affinity of OH(N2O) is estimated to be 2.14+/-0.02 eV, from which the OH-N2O bond dissociation energy is calculated as 0.39 eV. The photoelectron spectra of OH-(N2O)(n>1) are accurately modeled as the convolution of the OH-(N2O) spectrum with the OH-(N2O)(n-1). The anion vertical detachment energies and the adiabatic electron affinities for OH(N2O)(n=2-5) are obtained and the thresholds for stepwise dissociation of N2O are located, indicating that photodetachment accesses multiple dissociation channels.