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

using model chemistry: mPW1PW91/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 mPW1PW91/cc-pVDZ
 hartrees
Energy at 0K-410.106171
Energy at 298.15K 
HF Energy-410.106171
Nuclear repulsion energy239.556684
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 mPW1PW91/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 1507 1444 0.00 15.89 0.51 0.67
2 Ag 869 833 0.00 13.39 0.12 0.21
3 Ag 325 312 0.00 30.86 0.32 0.48
4 Au 100 96 0.00 0.00 0.00 0.00
5 B1u 1376 1318 466.63 0.00 0.00 0.00
6 B1u 787 754 237.30 0.00 0.00 0.00
7 B2g 732 701 0.00 0.41 0.75 0.86
8 B2u 1933 1852 650.80 0.00 0.00 0.00
9 B2u 248 237 0.30 0.00 0.00 0.00
10 B3g 1901 1821 0.00 5.16 0.75 0.86
11 B3g 531 509 0.00 9.37 0.75 0.86
12 B3u 463 444 18.54 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5384.6 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 5160.1 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 mPW1PW91/cc-pVDZ
ABC
0.22041 0.12611 0.08022

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.872
N2 0.000 0.000 -0.872
O3 0.000 1.093 1.325
O4 0.000 -1.093 1.325
O5 0.000 1.093 -1.325
O6 0.000 -1.093 -1.325

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.74411.18361.18362.45432.4543
N21.74412.45432.45431.18361.1836
O31.18362.45432.18672.65063.4362
O41.18362.45432.18673.43622.6506
O52.45431.18362.65063.43622.1867
O62.45431.18363.43622.65062.1867

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 112.517 N1 N2 O6 112.517
N2 N1 O3 112.517 N2 N1 O4 112.517
O3 N1 O4 134.966 O5 N2 O6 134.966
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.320      
2 N 0.320      
3 O -0.160      
4 O -0.160      
5 O -0.160      
6 O -0.160      


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 -28.621 0.000 0.000
y 0.000 -35.661 0.000
z 0.000 0.000 -33.509
Traceless
 xyz
x 5.964 0.000 0.000
y 0.000 -4.596 0.000
z 0.000 0.000 -1.368
Polar
3z2-r2-2.736
x2-y27.040
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.666 0.000 0.000
y 0.000 6.026 0.000
z 0.000 0.000 5.747


<r2> (average value of r2) Å2
<r2> 125.465
(<r2>)1/2 11.201