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: B3LYPultrafine/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 B3LYPultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-205.088841
Energy at 298.15K-205.089885
HF Energy-205.088841
Nuclear repulsion energy64.934134
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 B3LYPultrafine/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 1399 1350 0.30 20.06 0.18 0.30
2 A1 756 730 5.83 1.03 0.75 0.86
3 B2 1723 1662 332.39 4.92 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1938.9 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 1871.1 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 B3LYPultrafine/6-31G(2df,p)
ABC
8.03490 0.43397 0.41173

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.323
O2 0.000 1.102 -0.141
O3 0.000 -1.102 -0.141

Atom - Atom Distances (Å)
  N1 O2 O3
N11.19571.1957
O21.19572.2039
O31.19572.2039

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 134.320
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.425      
2 O -0.212      
3 O -0.212      


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 0.305 0.305
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.496 0.000 0.000
y 0.000 -17.356 0.000
z 0.000 0.000 -15.165
Traceless
 xyz
x 1.765 0.000 0.000
y 0.000 -2.526 0.000
z 0.000 0.000 0.761
Polar
3z2-r21.522
x2-y22.860
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.351 0.000 0.000
y 0.000 3.616 0.000
z 0.000 0.000 1.578


<r2> (average value of r2) Å2
<r2> 30.266
(<r2>)1/2 5.501