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: B3LYP/aug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at B3LYP/aug-cc-pVDZ
 hartrees
Energy at 0K-410.246545
Energy at 298.15K 
HF Energy-410.246545
Nuclear repulsion energy236.110011
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 B3LYP/aug-cc-pVDZ
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 1450 1407 0.00 25.00 0.63 0.77
2 Ag 837 813 0.00 27.53 0.13 0.22
3 Ag 291 283 0.00 43.51 0.29 0.44
4 Au 85 82 0.00 0.00 0.00 0.00
5 B1u 1313 1274 467.67 0.00 0.00 0.00
6 B1u 747 725 259.88 0.00 0.00 0.00
7 B2g 692 672 0.00 0.40 0.75 0.86
8 B2u 1830 1776 701.78 0.00 0.00 0.00
9 B2u 219 213 0.02 0.00 0.00 0.00
10 B3g 1792 1739 0.00 15.20 0.75 0.86
11 B3g 479 465 0.00 8.48 0.75 0.86
12 B3u 437 424 16.13 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5086.1 cm-1
Scaled (by 0.9704) Zero Point Vibrational Energy (zpe) 4935.5 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 B3LYP/aug-cc-pVDZ
ABC
0.21769 0.11978 0.07727

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/aug-cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.899
N2 0.000 0.000 -0.899
O3 0.000 1.100 1.359
O4 0.000 -1.100 1.359
O5 0.000 1.100 -1.359
O6 0.000 -1.100 -1.359

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.79711.19261.19262.51112.5111
N21.79712.51112.51111.19261.1926
O31.19262.51112.20032.71753.4966
O41.19262.51112.20033.49662.7175
O52.51111.19262.71753.49662.2003
O62.51111.19263.49662.71752.2003

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 112.701 N1 N2 O6 112.701
N2 N1 O3 112.701 N2 N1 O4 112.701
O3 N1 O4 134.598 O5 N2 O6 134.598
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.839      
2 N 0.839      
3 O -0.420      
4 O -0.420      
5 O -0.420      
6 O -0.420      


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 -29.662 0.000 0.000
y 0.000 -36.233 0.000
z 0.000 0.000 -34.749
Traceless
 xyz
x 5.830 0.000 0.000
y 0.000 -4.028 0.000
z 0.000 0.000 -1.802
Polar
3z2-r2-3.604
x2-y26.572
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.139 0.000 0.000
y 0.000 7.239 0.000
z 0.000 0.000 8.322


<r2> (average value of r2) Å2
<r2> 130.068
(<r2>)1/2 11.405