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

using model chemistry: HF/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 HF/6-31G(2df,p)
 hartrees
Energy at 0K-408.088213
Energy at 298.15K 
HF Energy-408.088213
Nuclear repulsion energy249.860364
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 HF/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 1608 1456 0.00 44.72 0.55 0.71
2 Ag 972 880 0.00 21.34 0.20 0.33
3 Ag 466 422 0.00 24.87 0.35 0.52
4 Au 75 67 0.00 0.00 0.00 0.00
5 B1u 1529 1385 417.79 0.00 0.00 0.00
6 B1u 891 807 217.49 0.00 0.00 0.00
7 B2g 950 860 0.00 0.61 0.75 0.86
8 B2u 2022 1831 1211.73 0.00 0.00 0.00
9 B2u 372 337 0.02 0.00 0.00 0.00
10 B3g 1992 1804 0.00 1.98 0.75 0.86
11 B3g 649 587 0.00 4.83 0.75 0.86
12 B3u 614 556 42.44 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 6069.0 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 5495.4 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 HF/6-31G(2df,p)
ABC
0.23264 0.14388 0.08890

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.790
N2 0.000 0.000 -0.790
O3 0.000 1.064 1.248
O4 0.000 -1.064 1.248
O5 0.000 1.064 -1.248
O6 0.000 -1.064 -1.248

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.57951.15881.15882.29922.2992
N21.57952.29922.29921.15881.1588
O31.15882.29922.12852.49673.2808
O41.15882.29922.12853.28082.4967
O52.29921.15882.49673.28082.1285
O62.29921.15883.28082.49672.1285

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 113.312 N1 N2 O6 113.312
N2 N1 O3 113.312 N2 N1 O4 113.312
O3 N1 O4 133.375 O5 N2 O6 133.375
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.845      
2 N 0.845      
3 O -0.423      
4 O -0.423      
5 O -0.423      
6 O -0.423      


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 -28.762 0.000 0.000
y 0.000 -36.245 0.000
z 0.000 0.000 -34.748
Traceless
 xyz
x 6.735 0.000 0.000
y 0.000 -4.491 0.000
z 0.000 0.000 -2.244
Polar
3z2-r2-4.488
x2-y27.483
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.375 0.000 0.000
y 0.000 6.127 0.000
z 0.000 0.000 4.996


<r2> (average value of r2) Å2
<r2> 115.609
(<r2>)1/2 10.752