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

using model chemistry: TPSSh/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 TPSSh/Def2TZVPP
 hartrees
Energy at 0K-410.369559
Energy at 298.15K 
HF Energy-410.369559
Nuclear repulsion energy235.636703
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 TPSSh/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 1440 1440 0.00 18.17 0.44 0.61
2 Ag 843 843 0.00 16.22 0.10 0.18
3 Ag 280 280 0.00 35.71 0.30 0.46
4 Au 89 89 0.00 0.00 0.00 0.00
5 B1u 1291 1291 486.04 0.00 0.00 0.00
6 B1u 748 748 279.82 0.00 0.00 0.00
7 B2g 678 678 0.00 0.46 0.75 0.86
8 B2u 1809 1809 676.59 0.00 0.00 0.00
9 B2u 203 203 0.07 0.00 0.00 0.00
10 B3g 1778 1778 0.00 12.63 0.75 0.86
11 B3g 482 482 0.00 9.84 0.75 0.86
12 B3u 425 425 13.00 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5032.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5032.4 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 TPSSh/Def2TZVPP
ABC
0.21876 0.11768 0.07652

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.912
N2 0.000 0.000 -0.912
O3 0.000 1.097 1.369
O4 0.000 -1.097 1.369
O5 0.000 1.097 -1.369
O6 0.000 -1.097 -1.369

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.82441.18881.18882.53162.5316
N21.82442.53162.53161.18881.1888
O31.18882.53162.19492.73843.5095
O41.18882.53162.19493.50952.7384
O52.53161.18882.73843.50952.1949
O62.53161.18883.50952.73842.1949

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 112.608 N1 N2 O6 112.608
N2 N1 O3 112.608 N2 N1 O4 112.608
O3 N1 O4 134.783 O5 N2 O6 134.783
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.380      
2 N 0.380      
3 O -0.190      
4 O -0.190      
5 O -0.190      
6 O -0.190      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.563 0.000 0.000
y 0.000 6.872 0.000
z 0.000 0.000 7.662


<r2> (average value of r2) Å2
<r2> 130.725
(<r2>)1/2 11.434