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 N2O4 (Dinitrogen tetroxide)

using model chemistry: wB97X-D/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at wB97X-D/3-21G*
 hartrees
Energy at 0K-407.703779
Energy at 298.15K 
HF Energy-407.703779
Nuclear repulsion energy233.411164
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 wB97X-D/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Ag 1269 1202 0.00 12.42 0.50 0.67
2 Ag 818 775 0.00 15.13 0.12 0.21
3 Ag 350 331 0.00 28.84 0.34 0.51
4 Au 108 103 0.00 0.00 0.00 0.00
5 B1u 1141 1082 369.46 0.00 0.00 0.00
6 B1u 721 684 162.24 0.00 0.00 0.00
7 B2g 655 621 0.00 0.44 0.75 0.86
8 B2u 1587 1504 306.26 0.00 0.00 0.00
9 B2u 216 204 0.62 0.00 0.00 0.00
10 B3g 1561 1479 0.00 4.21 0.75 0.86
11 B3g 490 464 0.00 9.41 0.75 0.86
12 B3u 424 402 14.51 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 4669.1 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 4425.4 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 wB97X-D/3-21G*
ABC
0.20362 0.12415 0.07712

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.874
N2 0.000 0.000 -0.874
O3 0.000 1.138 1.337
O4 0.000 -1.138 1.337
O5 0.000 1.138 -1.337
O6 0.000 -1.138 -1.337

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.74871.22801.22802.48682.4868
N21.74872.48682.48681.22801.2280
O31.22802.48682.27512.67413.5110
O41.22802.48682.27513.51102.6741
O52.48681.22802.67413.51102.2751
O62.48681.22803.51102.67412.2751

picture of Dinitrogen tetroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N1 N2 O5 112.135 N1 N2 O6 112.135
N2 N1 O3 112.135 N2 N1 O4 112.135
O3 N1 O4 135.730 O5 N2 O6 135.730
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.497      
2 N 0.497      
3 O -0.249      
4 O -0.249      
5 O -0.249      
6 O -0.249      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.874 0.000 0.000
y 0.000 -36.531 0.000
z 0.000 0.000 -33.695
Traceless
 xyz
x 6.239 0.000 0.000
y 0.000 -5.247 0.000
z 0.000 0.000 -0.992
Polar
3z2-r2-1.985
x2-y27.658
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.096 0.000 0.000
y 0.000 5.870 0.000
z 0.000 0.000 5.340


<r2> (average value of r2) Å2
<r2> 129.951
(<r2>)1/2 11.400