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All results from a given calculation for N2O4 (Dinitrogen tetroxide)

using model chemistry: PBEPBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at PBEPBE/Def2TZVPP
 hartrees
Energy at 0K-409.999303
Energy at 298.15K 
HF Energy-409.999303
Nuclear repulsion energy233.089203
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 PBEPBE/Def2TZVPP
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 1409 1392 0.00 16.46 0.35 0.52
2 Ag 822 812 0.00 13.52 0.09 0.17
3 Ag 264 261 0.00 31.96 0.29 0.45
4 Au 86 85 0.00 0.00 0.00 0.00
5 B1u 1265 1250 442.18 0.00 0.00 0.00
6 B1u 730 721 257.30 0.00 0.00 0.00
7 B2g 638 631 0.00 0.36 0.75 0.86
8 B2u 1773 1752 591.34 0.00 0.00 0.00
9 B2u 192 190 0.06 0.00 0.00 0.00
10 B3g 1745 1724 0.00 15.29 0.75 0.86
11 B3g 457 451 0.00 9.80 0.75 0.86
12 B3u 399 394 10.27 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 4890.1 cm-1
Scaled (by 0.9879) Zero Point Vibrational Energy (zpe) 4830.9 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 PBEPBE/Def2TZVPP
ABC
0.21597 0.11367 0.07448

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/Def2TZVPP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.932
N2 0.000 0.000 -0.932
O3 0.000 1.105 1.392
O4 0.000 -1.105 1.392
O5 0.000 1.105 -1.392
O6 0.000 -1.105 -1.392

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.86321.19671.19672.57292.5729
N21.86322.57292.57291.19671.1967
O31.19672.57292.20912.78423.5541
O41.19672.57292.20913.55412.7842
O52.57291.19672.78423.55412.2091
O62.57291.19673.55412.78422.2091

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 112.634 N1 N2 O6 112.634
N2 N1 O3 112.634 N2 N1 O4 112.634
O3 N1 O4 134.733 O5 N2 O6 134.733
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.311      
2 N 0.311      
3 O -0.156      
4 O -0.156      
5 O -0.156      
6 O -0.156      


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 -29.395 0.000 0.000
y 0.000 -35.734 0.000
z 0.000 0.000 -33.795
Traceless
 xyz
x 5.369 0.000 0.000
y 0.000 -4.139 0.000
z 0.000 0.000 -1.231
Polar
3z2-r2-2.461
x2-y26.339
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.628 0.000 0.000
y 0.000 7.006 0.000
z 0.000 0.000 7.968


<r2> (average value of r2) Å2
<r2> 133.801
(<r2>)1/2 11.567