return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for NO2 (Nitrogen dioxide)

using model chemistry: B3PW91/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at B3PW91/Def2TZVPP
 hartrees
Energy at 0K-205.087000
Energy at 298.15K-205.088053
HF Energy-205.087000
Nuclear repulsion energy65.418663
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at B3PW91/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1419 1419 0.32 22.26 0.18 0.31
2 A1 775 775 6.86 1.36 0.75 0.86
3 B2 1749 1749 432.08 6.58 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1971.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1971.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at B3PW91/Def2TZVPP
ABC
8.26031 0.43974 0.41751

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.318
O2 0.000 1.095 -0.139
O3 0.000 -1.095 -0.139

Atom - Atom Distances (Å)
  N1 O2 O3
N11.18651.1865
O21.18652.1894
O31.18652.1894

picture of Nitrogen dioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 N1 O3 134.615
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.369      
2 O -0.185      
3 O -0.185      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.323 0.323
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.696 0.000 0.000
y 0.000 -17.815 0.000
z 0.000 0.000 -15.463
Traceless
 xyz
x 1.943 0.000 0.000
y 0.000 -2.735 0.000
z 0.000 0.000 0.792
Polar
3z2-r21.584
x2-y23.119
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.381 0.000 0.000
y 0.000 3.946 0.000
z 0.000 0.000 1.689


<r2> (average value of r2) Å2
<r2> 30.182
(<r2>)1/2 5.494