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: B97D3/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at B97D3/6-31G(2df,p)
 hartrees
Energy at 0K-410.009651
Energy at 298.15K 
HF Energy-410.009651
Nuclear repulsion energy232.469656
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 B97D3/6-31G(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 Ag 1427 1427 0.00 15.62 0.24 0.38
2 Ag 822 822 0.00 10.33 0.09 0.17
3 Ag 255 255 0.00 26.90 0.29 0.45
4 Au 88 88 0.00 0.00 0.00 0.00
5 B1u 1279 1279 434.05 0.00 0.00 0.00
6 B1u 732 732 245.43 0.00 0.00 0.00
7 B2g 635 635 0.00 0.03 0.75 0.86
8 B2u 1804 1804 521.14 0.00 0.00 0.00
9 B2u 184 184 0.14 0.00 0.00 0.00
10 B3g 1780 1780 0.00 10.35 0.75 0.86
11 B3g 448 448 0.00 8.52 0.75 0.86
12 B3u 394 394 10.15 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 4923.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4923.4 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 B97D3/6-31G(2df,p)
ABC
0.21610 0.11203 0.07378

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31G(2df,p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.942
N2 0.000 0.000 -0.942
O3 0.000 1.104 1.401
O4 0.000 -1.104 1.401
O5 0.000 1.104 -1.401
O6 0.000 -1.104 -1.401

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.88431.19581.19582.59042.5904
N21.88432.59042.59041.19581.1958
O31.19582.59042.20842.80243.5680
O41.19582.59042.20843.56802.8024
O52.59041.19582.80243.56802.2084
O62.59041.19583.56802.80242.2084

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 112.574 N1 N2 O6 112.574
N2 N1 O3 112.574 N2 N1 O4 112.574
O3 N1 O4 134.853 O5 N2 O6 134.853
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B97D3/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.546      
2 N 0.546      
3 O -0.273      
4 O -0.273      
5 O -0.273      
6 O -0.273      


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 -28.631 0.000 0.000
y 0.000 -34.476 0.000
z 0.000 0.000 -32.567
Traceless
 xyz
x 4.890 0.000 0.000
y 0.000 -3.876 0.000
z 0.000 0.000 -1.014
Polar
3z2-r2-2.028
x2-y25.844
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.544 0.000 0.000
y 0.000 6.335 0.000
z 0.000 0.000 7.538


<r2> (average value of r2) Å2
<r2> 134.188
(<r2>)1/2 11.584