Ultraviolet photoelectron spectrum of NO/sub 2//sup -/
Journal Article
·
· J. Phys. Chem.; (United States)
The 351.1-nm (3.532-eV) photoelectron spectrum of the nitrite anion (NO/sub 2//sup -/) is reported. The electron affinity of NO/sub 2/ is found to be 2.273 /plus minus/ 0.005 eV, which leads to the heat of formation ..delta../sub f/H/sub 0//degrees/(NO/sub 2//sup -/) = /minus/183.4 /plus minus/ 0.9 kJ/mol (/minus/43.8 /plus minus/ 0.2 kcal/mol). Vibrational progressions of the symmetric stretch and bending modes of nitrogen dioxide, NO/sub 2/(/anti/X/sup 2/A/sub 1/), are observed up to 8000 cm/sup -1/ above the ground state. Observed fundamental vibrational frequencies of NO/sub 2//sup -/ are v/sub 1/ = 1284 /plus minus/ 30 cm/sup -1/ (symmetric stretch) and v/sub 2/ = 776 /plus minus/ 30 cm/sup -1/ (bend). The vibrational band intensities are modeled by using a Franck-Condon analysis which explicitly treats the Duschinsky rotation of the normal coordinates between the anion and the neutral molecule. This analysis provides an estimate of the equilibrium geometry of the anion: r/sub c/(N-O) = 1.25 /plus minus/ 0.02 /Angstrom/ and ..cap alpha../sub c/(O-N-O) = 117.5 /plus minus/ 2/degrees//
- Research Organization:
- Univ. of Colorado, Boulder (USA)
- OSTI ID:
- 6187926
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 92:19; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
500100 -- Environment
Atmospheric-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
AFFINITY
ANIONS
BOND ANGLE
BOND LENGTHS
CHALCOGENIDES
CHARGED PARTICLES
DATA
DIMENSIONS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ENERGY LEVELS
ENTHALPY
EXCITED STATES
EXPERIMENTAL DATA
FORMATION HEAT
INFORMATION
IONIZATION
IONS
LENGTH
MOLECULAR STRUCTURE
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NORMAL-MODE ANALYSIS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PHYSICAL PROPERTIES
RADIATIONS
REACTION HEAT
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
THERMODYNAMIC PROPERTIES
ULTRAVIOLET RADIATION
VIBRATIONAL STATES
400201* -- Chemical & Physicochemical Properties
400500 -- Photochemistry
500100 -- Environment
Atmospheric-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
AFFINITY
ANIONS
BOND ANGLE
BOND LENGTHS
CHALCOGENIDES
CHARGED PARTICLES
DATA
DIMENSIONS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ENERGY LEVELS
ENTHALPY
EXCITED STATES
EXPERIMENTAL DATA
FORMATION HEAT
INFORMATION
IONIZATION
IONS
LENGTH
MOLECULAR STRUCTURE
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NORMAL-MODE ANALYSIS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PHYSICAL PROPERTIES
RADIATIONS
REACTION HEAT
SPECTROSCOPY
STRUCTURAL CHEMICAL ANALYSIS
THERMODYNAMIC PROPERTIES
ULTRAVIOLET RADIATION
VIBRATIONAL STATES