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/6-311G*

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/6-311G*
 hartrees
Energy at 0K-410.289330
Energy at 298.15K 
HF Energy-410.289330
Nuclear repulsion energy236.810336
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/6-311G*
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 1457 1408 0.00 15.64 0.43 0.60
2 Ag 855 826 0.00 12.82 0.12 0.21
3 Ag 299 289 0.00 33.91 0.31 0.48
4 Au 95 92 0.00 0.00 0.00 0.00
5 B1u 1316 1272 497.13 0.00 0.00 0.00
6 B1u 772 746 264.74 0.00 0.00 0.00
7 B2g 683 660 0.00 0.38 0.75 0.86
8 B2u 1842 1779 660.13 0.00 0.00 0.00
9 B2u 229 221 0.20 0.00 0.00 0.00
10 B3g 1811 1750 0.00 6.86 0.75 0.86
11 B3g 500 483 0.00 10.17 0.75 0.86
12 B3u 439 424 15.18 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5147.8 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 4974.3 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/6-311G*
ABC
0.21907 0.12033 0.07767

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-311G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.899
N2 0.000 0.000 -0.899
O3 0.000 1.097 1.355
O4 0.000 -1.097 1.355
O5 0.000 1.097 -1.355
O6 0.000 -1.097 -1.355

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.79741.18791.18792.50642.5064
N21.79742.50642.50641.18791.1879
O31.18792.50642.19342.71013.4865
O41.18792.50642.19343.48652.7101
O52.50641.18792.71013.48652.1934
O62.50641.18793.48652.71012.1934

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 112.594 N1 N2 O6 112.594
N2 N1 O3 112.594 N2 N1 O4 112.594
O3 N1 O4 134.812 O5 N2 O6 134.812
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.344      
2 N 0.344      
3 O -0.172      
4 O -0.172      
5 O -0.172      
6 O -0.172      


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 -29.026 0.000 0.000
y 0.000 -36.251 0.000
z 0.000 0.000 -33.904
Traceless
 xyz
x 6.052 0.000 0.000
y 0.000 -4.787 0.000
z 0.000 0.000 -1.265
Polar
3z2-r2-2.530
x2-y27.226
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.783 0.000 0.000
y 0.000 6.298 0.000
z 0.000 0.000 6.433


<r2> (average value of r2) Å2
<r2> 129.202
(<r2>)1/2 11.367