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: HSEh1PBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 2A1
Energy calculated at HSEh1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-204.897479
Energy at 298.15K-204.898533
HF Energy-204.897479
Nuclear repulsion energy65.381558
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 HSEh1PBE/6-31G(2df,p)
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 1447 1386 0.40 20.58 0.18 0.30
2 A1 771 739 6.26 0.97 0.75 0.86
3 B2 1803 1727 368.46 4.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 2010.5 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 1925.4 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 HSEh1PBE/6-31G(2df,p)
ABC
8.29699 0.43893 0.41688

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.318
O2 0.000 1.096 -0.139
O3 0.000 -1.096 -0.139

Atom - Atom Distances (Å)
  N1 O2 O3
N11.18711.1871
O21.18712.1914
O31.18712.1914

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 134.743
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.482      
2 O -0.241      
3 O -0.241      


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 0.318 0.318
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.483 0.000 0.000
y 0.000 -17.313 0.000
z 0.000 0.000 -15.145
Traceless
 xyz
x 1.745 0.000 0.000
y 0.000 -2.498 0.000
z 0.000 0.000 0.753
Polar
3z2-r21.506
x2-y22.829
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.361 0.000 0.000
y 0.000 3.586 0.000
z 0.000 0.000 1.585


<r2> (average value of r2) Å2
<r2> 29.998
(<r2>)1/2 5.477