A study of nickel monoxide (NiO), nickel dioxide (ONiO), and Ni(O{sub 2}) complex by anion photoelectron spectroscopy
- Department of Physics, Washington State University, Richland, Washington 99352 (United States)
We report the first anion photoelectron spectroscopic study of nickel monoxide (NiO), nickel dioxide (ONiO), and nickel-O{sub 2} complex, Ni(O{sub 2}). The adiabatic electron affinity (EA) of NiO is measured to be 1.46 (2) eV. Five low-lying electronic excited states (A{sup 3}{Pi},a{sup 1}{Delta}, B{sup 3}{Phi},b{sup 1}{Sigma}{sup +},c{sup 1}{Pi}) are observed for NiO at 0.43 (4), 0.94 (4), 1.24 (3), 1.80 (10), and 2.38 (10) eV above the ground state, respectively. Two isomers are observed for NiO{sub 2}, i.e., the linear ONiO dioxide and the Ni(O{sub 2}) complex. The dioxide has a high EA of 3.05 (1) eV while the Ni(O{sub 2}) complex has a rather low EA of 0.82 (3) eV. Two low-lying excited states are observed for ONiO at 0.40 (2) and 0.77 (3) eV above the ground state, respectively. The vibrational frequency of the {nu}{sub 1} mode of the ground state ONiO (X{sup 3}{Sigma}{sub g}{sup {minus}}) is measured to be 750(30)cm{sup {minus}1}. The excited states of the Ni(O{sub 2}) complex give broad photodetachment features starting at about 1.1 eV above the ground state. Information about the electronic structures of the nickel oxide species and chemical bonding between Ni and O and O{sub 2} is obtained and discussed. {copyright} {ital 1997 American Institute of Physics.}
- Research Organization:
- Pacific Northwest National Laboratory
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 530057
- Journal Information:
- Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 1 Vol. 107; ISSN JCPSA6; ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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