REACTIONS OF LASER-ABLATED NICKEL ATOMS WITH DIOXYGEN - INFRARED-SPECTRA AND DENSITY-FUNCTIONAL CALCULATIONS OF NICKEL OXIDES NIO, ONIO, NI2O2, AND NI2O3, SUPEROXIDE NIOO, PEROXIDE NI(O-2), AND HIGHER COMPLEXES IN SOLID ARGON
A. Citra et al., REACTIONS OF LASER-ABLATED NICKEL ATOMS WITH DIOXYGEN - INFRARED-SPECTRA AND DENSITY-FUNCTIONAL CALCULATIONS OF NICKEL OXIDES NIO, ONIO, NI2O2, AND NI2O3, SUPEROXIDE NIOO, PEROXIDE NI(O-2), AND HIGHER COMPLEXES IN SOLID ARGON, The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory, 101(17), 1997, pp. 3109-3118
Laser-ablated nickel atoms react with dioxygen to form the primary oxi
des NiO and ONiO, some of which combine to form the secondary oxides N
i2O2 and ONiONiO during condensation in excess argon at 10 K. The inse
rtion product dioxide ONiO is linear based on natural nickel and O-18
isotopic substitution and DFT calculations. Annealing produces the cyc
lic adducts reported in earlier thermal nickel experiments and the new
NiOO superoxide species, which are characterized by isotopic shifts a
nd DFT structure and frequency calculations. In addition, dioxygen com
plexes with NiO and ONiO were also observed. Finally, the matrix provi
des sharp bands and the resolution to observe nickel isotopic splittin
gs which characterize the Fermi-resonance interaction in the ONiOO and
(O-2)Ni(O2) molecules.