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Experimental data for NO2+ (Nitrogen dioxide cation)

22 02 02 11 45
Other names
Azote; Azoto; NA 1067; Nitrito; Nitro; Nitrogen dioxide; Nitrogen oxide; Nitrogen oxide (NO2); Nitrogen peroxide; Stickstoffdioxid; Stikstofdioxyde;
INChI INChIKey SMILES IUPAC name
InChI=1S/NO2/c2-1-3 JCXJVPUVTGWSNB-UHFFFAOYSA-N O=N=O Nitrogen dioxide
State Conformation
2A1 C2V
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation 33.97 0.08 kJ mol-1 2006Rus/Pin:6592
Hfg(0K) enthalpy of formation 36.78 0.08 kJ mol-1 2006Rus/Pin:6592
Entropy (298.15K) entropy 240.17   J K-1 mol-1 Gurvich
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 10.19   kJ mol-1 Gurvich
Heat Capacity (298.15K) heat capacity 37.18   J K-1 mol-1 Gurvich
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A1 1318 1358 Shim       NO2 s-stretch
2 A1 750 757 Shim       bend
3 B2 1618 1666 1974sve/kov       NO2 a-stretch

vibrational zero-point energy: 1843.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for NO2+ (Nitrogen dioxide cation).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
8.00120 0.43364 0.41040 1966Herzberg

Calculated rotational constants for NO2+ (Nitrogen dioxide cation).
Product of moments of inertia moments of inertia
3364.324amu3Å6   1.5405144160752E-116gm3 cm6
Geometric Data
picture of Nitrogen dioxide cation

Point Group C2v


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rNO 1.193   1 2 1966Herzberg
aONO 134.1 2 1 3 1966Herzberg

Cartesians
Atom x (Å) y (Å) z (Å)
N1 0.0000 0.0000 0.0000
O2 0.0000 1.0989 0.4653
O3 0.0000 -1.0989 0.4653

Atom - Atom Distances bond lengths
Distances in Å
  N1 O2 O3
N1   1.19341.1934
O2 1.1934   2.1979
O3 1.19342.1979  

Calculated geometries for NO2+ (Nitrogen dioxide cation).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle
O2 N1 O3 134.100

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
N=O 2

Connectivity
Atom 1 Atom 2
N1 O2
N1 O3
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 2   2A1
15000 2  

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
9.586 0.002 11.230   webbook

Electron Affinity (eV)
Electron Affinity unc. reference
2.273 0.005 webbook

Proton Affinity (kJ mol-1)
Proton Affinity unc. Product reference comment
591.0   HNO2+ webbook  
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 2A1 C2v True       0.316 NSRDS-NBS10 MW C2v 1 2
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for NO2+ (Nitrogen dioxide cation).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 2A1 C2v True       C2v 1 2

Calculated electric quadrupole moments for NO2+ (Nitrogen dioxide cation).
Electric dipole polarizability (Å3) polarizability
alpha unc. Reference
2.910   1997Oln/Can:59

Calculated electric dipole polarizability for NO2+ (Nitrogen dioxide cation).

References
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squib reference DOI
1966Herzberg Herzberg, G., Electronic spectra and electronic structure of polyatomic molecules,Van Nostrand,New York, 1966  
1974sve/kov L.M. Sverdlov, M. A. Kovner, E. P. Krainov, "Vibrational Spectra of Polyatomic Molecules" Wiley, New York 1974  
1997Oln/Can:59 TN Olney, NM Cann, G Cooper, CE Brion, Absolute scale determination for photoabsorption spectra and the calculation of molecular properties using dipole sum-rules, Chem. Phys. 223 (1997) 59-98 10.1016/S0301-0104(97)00145-6
2006Rus/Pin:6592 B Ruscic, RE Pinzon, ML Morton, NK Srinivasan, M-C Su, JW Sutherland, JV Michael "Active Thermochemical Tables: Accurate Enthalpy of Formation of Hydroperoxyl Radical, HO2" J. Phys. Chem. A 2006, 110, 6592-6601 10.1021/jp056311j
Gurvich Gurvich, L.V.; Veyts, I. V.; Alcock, C. B., Thermodynamic Properties of Individual Substances, Fouth Edition, Hemisphere Pub. Co., New York, 1989  
NSRDS-NBS10 R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967 10.6028/NBS.NSRDS.10
Shim Shimanouchi, T. , Tables of Molecular Vibrational Frequencies, Consolidated Volu 10.6028/NBS.NSRDS.39
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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