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

using model chemistry: HSEh1PBE/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 HSEh1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-409.824898
Energy at 298.15K 
HF Energy-409.824898
Nuclear repulsion energy240.229985
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 HSEh1PBE/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 1494 1431 0.00 18.05 0.46 0.63
2 Ag 863 827 0.00 15.74 0.11 0.20
3 Ag 325 311 0.00 29.53 0.30 0.47
4 Au 98 94 0.00 0.00 0.00 0.00
5 B1u 1370 1312 408.99 0.00 0.00 0.00
6 B1u 782 749 219.77 0.00 0.00 0.00
7 B2g 753 721 0.00 0.15 0.75 0.86
8 B2u 1925 1843 645.37 0.00 0.00 0.00
9 B2u 252 241 0.15 0.00 0.00 0.00
10 B3g 1893 1813 0.00 5.03 0.75 0.86
11 B3g 533 511 0.00 7.91 0.75 0.86
12 B3u 471 451 18.01 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5379.2 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 5151.6 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 HSEh1PBE/6-31G(2df,p)
ABC
0.22101 0.12737 0.08080

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G(2df,p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.866
N2 0.000 0.000 -0.866
O3 0.000 1.092 1.319
O4 0.000 -1.092 1.319
O5 0.000 1.092 -1.319
O6 0.000 -1.092 -1.319

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.73211.18221.18222.44282.4428
N21.73212.44282.44281.18221.1822
O31.18222.44282.18382.63843.4249
O41.18222.44282.18383.42492.6384
O52.44281.18222.63843.42492.1838
O62.44281.18223.42492.63842.1838

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 112.539 N1 N2 O6 112.539
N2 N1 O3 112.539 N2 N1 O4 112.539
O3 N1 O4 134.921 O5 N2 O6 134.921
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.605      
2 N 0.605      
3 O -0.302      
4 O -0.302      
5 O -0.302      
6 O -0.302      


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 -28.667 0.000 0.000
y 0.000 -35.033 0.000
z 0.000 0.000 -33.263
Traceless
 xyz
x 5.481 0.000 0.000
y 0.000 -4.068 0.000
z 0.000 0.000 -1.413
Polar
3z2-r2-2.825
x2-y26.366
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.474 0.000 0.000
y 0.000 6.135 0.000
z 0.000 0.000 6.312


<r2> (average value of r2) Å2
<r2> 124.527
(<r2>)1/2 11.159