return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B1B95/aug-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 B1B95/aug-cc-pVDZ
 hartrees
Energy at 0K-410.130700
Energy at 298.15K-410.134219
Nuclear repulsion energy 
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 B1B95/aug-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 1492 1430 0.00      
2 Ag 855 819 0.00      
3 Ag 320 306 0.00      
4 Au 89 85 0.00      
5 B1u 1363 1305 455.30      
6 B1u 766 734 250.00      
7 B2g 732 701 0.00      
8 B2u 1909 1829 738.82      
9 B2u 250 240 0.02      
10 B3g 1866 1788 0.00      
11 B3g 507 486 0.00      
12 B3u 461 442 18.12      

Unscaled Zero Point Vibrational Energy (zpe) 5305.3 cm-1
Scaled (by 0.9579) Zero Point Vibrational Energy (zpe) 5081.9 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 B1B95/aug-cc-pVDZ
ABC
0.22064 0.12544 0.07997

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.874
N2 0.000 0.000 -0.874
O3 0.000 1.093 1.329
O4 0.000 -1.093 1.329
O5 0.000 1.093 -1.329
O6 0.000 -1.093 -1.329

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.74831.18361.18362.45922.4592
N21.74832.45922.45921.18361.1836
O31.18362.45922.18562.65783.4410
O41.18362.45922.18563.44102.6578
O52.45921.18362.65783.44102.1856
O62.45921.18363.44102.65782.1856

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 112.596 N1 N2 O6 112.596
N2 N1 O3 112.596 N2 N1 O4 112.596
O3 N1 O4 134.809 O5 N2 O6 134.809
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.893      
2 N 0.893      
3 O -0.446      
4 O -0.446      
5 O -0.446      
6 O -0.446      


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 3.064 0.000 0.000
y 0.000 7.047 0.000
z 0.000 0.000 7.704


<r2> (average value of r2) Å2
<r2> 126.186
(<r2>)1/2 11.233