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Experimental data for N2O- (Nitrous oxide anion)

22 02 02 11 45
Other names
Dinitrogen monoxide; Dinitrogen oxide; Factitious air; Hyponitrous acid anhydride; Laughing gas; Nitrogen Monoxide; Nitrogen oxide; Nitrogen oxide (N2O); Nitrous Oxide;
INChI INChIKey SMILES IUPAC name
InChI=1S/N2O/c1-2-3 GQPLMRYTRLFLPF-UHFFFAOYSA-N [N]N=O Dinitrogen monoxide
State Conformation
1Σ C*V
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 81.60 0.50 kJ mol-1 Gurvich
Hfg(0K) enthalpy of formation 85.03 0.50 kJ mol-1 Gurvich
Entropy (298.15K) entropy 220.01   J K-1 mol-1 Gurvich
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 9.58   kJ mol-1 Gurvich
Heat Capacity (298.15K) heat capacity 38.63   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 Σ 2224 2282 2003Zun/Bas:43 345.2 18.5 1982Kag:297 fundamentals from webbook (14N2O) NN stretch
2 Σ 1285 1298 2003Zun/Bas:43 54.7 2.9 1982Kag:297 NO stretch
3 Π 589 596 2003Zun/Bas:43 7.0 0.4 1982Kag:297 bend

vibrational zero-point energy: 2343.5 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for N2O- (Nitrous oxide anion).
Gas-phase IR spectra can be found in the NIST Chemistry Webbook here.
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
  0.41901   1966Herzberg

Calculated rotational constants for N2O- (Nitrous oxide anion).
Product of moments of inertia moments of inertia
40.23195amu Å2   6.680777E-39gm cm2
Geometric Data
picture of Nitrous oxide anion

Point Group C∞v


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
rNN 1.128   1 2 1966Herzberg
rNO 1.184   2 3 1966Herzberg
aNNO 180 1 2 3 1966Herzberg
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