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: B3PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at B3PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-410.172840
Energy at 298.15K 
HF Energy-410.172840
Nuclear repulsion energy238.886505
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 B3PW91/6-311+G(3df,2p)
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 1473 1411 0.00 24.34 0.62 0.77
2 Ag 859 822 0.00 25.64 0.13 0.22
3 Ag 306 293 0.00 39.78 0.28 0.44
4 Au 88 84 0.00 0.00 0.00 0.00
5 B1u 1336 1279 457.60 0.00 0.00 0.00
6 B1u 771 738 258.66 0.00 0.00 0.00
7 B2g 727 696 0.00 0.20 0.75 0.86
8 B2u 1874 1794 726.69 0.00 0.00 0.00
9 B2u 232 222 0.03 0.00 0.00 0.00
10 B3g 1833 1755 0.00 11.81 0.75 0.86
11 B3g 506 484 0.00 7.99 0.75 0.86
12 B3u 459 440 15.96 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5232.3 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 5008.9 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 B3PW91/6-311+G(3df,2p)
ABC
0.22161 0.12347 0.07929

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311+G(3df,2p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.885
N2 0.000 0.000 -0.885
O3 0.000 1.090 1.338
O4 0.000 -1.090 1.338
O5 0.000 1.090 -1.338
O6 0.000 -1.090 -1.338

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.77051.18071.18072.47652.4765
N21.77052.47652.47651.18071.1807
O31.18072.47652.18082.67653.4525
O41.18072.47652.18083.45252.6765
O52.47651.18072.67653.45252.1808
O62.47651.18073.45252.67652.1808

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 112.561 N1 N2 O6 112.561
N2 N1 O3 112.561 N2 N1 O4 112.561
O3 N1 O4 134.878 O5 N2 O6 134.878
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.733      
2 N 0.733      
3 O -0.367      
4 O -0.367      
5 O -0.367      
6 O -0.367      


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 -29.362 0.000 0.000
y 0.000 -35.703 0.000
z 0.000 0.000 -34.243
Traceless
 xyz
x 5.611 0.000 0.000
y 0.000 -3.901 0.000
z 0.000 0.000 -1.710
Polar
3z2-r2-3.420
x2-y26.341
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.087 0.000 0.000
y 0.000 6.983 0.000
z 0.000 0.000 7.822


<r2> (average value of r2) Å2
<r2> 127.004
(<r2>)1/2 11.270