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: B97D3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at B97D3/6-31+G**
 hartrees
Energy at 0K-409.996830
Energy at 298.15K 
HF Energy-409.996830
Nuclear repulsion energy230.778894
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 B97D3/6-31+G**
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 1421 1397 0.00 18.27 0.49 0.65
2 Ag 813 799 0.00 17.70 0.10 0.17
3 Ag 251 247 0.00 37.10 0.28 0.44
4 Au 81 80 0.00 0.00 0.00 0.00
5 B1u 1274 1252 491.24 0.00 0.00 0.00
6 B1u 718 705 279.78 0.00 0.00 0.00
7 B2g 606 596 0.00 0.22 0.75 0.86
8 B2u 1790 1759 612.91 0.00 0.00 0.00
9 B2u 180 177 0.06 0.00 0.00 0.00
10 B3g 1764 1733 0.00 24.93 0.75 0.86
11 B3g 434 427 0.00 9.41 0.75 0.86
12 B3u 383 377 9.74 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 4857.3 cm-1
Scaled (by 0.9828) Zero Point Vibrational Energy (zpe) 4773.8 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 B97D3/6-31+G**
ABC
0.21433 0.10949 0.07247

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31+G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.953
N2 0.000 0.000 -0.953
O3 0.000 1.109 1.417
O4 0.000 -1.109 1.417
O5 0.000 1.109 -1.417
O6 0.000 -1.109 -1.417

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.90671.20191.20192.61712.6171
N21.90672.61712.61711.20191.2019
O31.20192.61712.21752.83453.5989
O41.20192.61712.21753.59892.8345
O52.61711.20192.83453.59892.2175
O62.61711.20193.59892.83452.2175

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 112.705 N1 N2 O6 112.705
N2 N1 O3 112.705 N2 N1 O4 112.705
O3 N1 O4 134.590 O5 N2 O6 134.590
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.045      
2 N -0.045      
3 O 0.022      
4 O 0.022      
5 O 0.022      
6 O 0.022      


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 -29.626 0.000 0.000
y 0.000 -35.822 0.000
z 0.000 0.000 -34.206
Traceless
 xyz
x 5.389 0.000 0.000
y 0.000 -3.907 0.000
z 0.000 0.000 -1.482
Polar
3z2-r2-2.964
x2-y26.197
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.775 0.000 0.000
y 0.000 7.353 0.000
z 0.000 0.000 8.999


<r2> (average value of r2) Å2
<r2> 137.087
(<r2>)1/2 11.708