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: B3LYPultrafine/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at B3LYPultrafine/daug-cc-pVTZ
 hartrees
Energy at 0K-410.343502
Energy at 298.15K 
HF Energy-410.343502
Nuclear repulsion energy236.925848
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 B3LYPultrafine/daug-cc-pVTZ
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 1443 1443 0.00 25.36 0.63 0.77
2 Ag 850 850 0.00 27.56 0.12 0.22
3 Ag 296 296 0.00 43.58 0.28 0.43
4 Au 88 88 0.00 0.00 0.00 0.00
5 B1u 1300 1300 479.26 0.00 0.00 0.00
6 B1u 760 760 278.34 0.00 0.00 0.00
7 B2g 702 702 0.00 0.32 0.75 0.86
8 B2u 1811 1811 733.48 0.00 0.00 0.00
9 B2u 225 225 0.02 0.00 0.00 0.00
10 B3g 1778 1778 0.00 13.17 0.75 0.86
11 B3g 497 497 0.00 8.36 0.75 0.86
12 B3u 444 444 16.26 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5096.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5096.2 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 B3LYPultrafine/daug-cc-pVTZ
ABC
0.22004 0.11986 0.07759

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/daug-cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.902
N2 0.000 0.000 -0.902
O3 0.000 1.094 1.357
O4 0.000 -1.094 1.357
O5 0.000 1.094 -1.357
O6 0.000 -1.094 -1.357

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.80311.18541.18542.51002.5100
N21.80312.51002.51001.18541.1854
O31.18542.51002.18852.71473.4871
O41.18542.51002.18853.48712.7147
O52.51001.18542.71473.48712.1885
O62.51001.18543.48712.71472.1885

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 112.613 N1 N2 O6 112.613
N2 N1 O3 112.613 N2 N1 O4 112.613
O3 N1 O4 134.774 O5 N2 O6 134.774
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 1.824      
2 N 1.824      
3 O -0.912      
4 O -0.912      
5 O -0.912      
6 O -0.912      


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 -29.535 0.000 0.000
y 0.000 -36.187 0.000
z 0.000 0.000 -34.548
Traceless
 xyz
x 5.832 0.000 0.000
y 0.000 -4.145 0.000
z 0.000 0.000 -1.687
Polar
3z2-r2-3.374
x2-y26.652
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.291 0.000 0.000
y 0.000 7.226 0.000
z 0.000 0.000 8.404


<r2> (average value of r2) Å2
<r2> 129.532
(<r2>)1/2 11.381