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

using model chemistry: PBEPBEultrafine/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at PBEPBEultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-409.848922
Energy at 298.15K 
HF Energy-409.848922
Nuclear repulsion energy233.325662
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 PBEPBEultrafine/6-31G(2df,p)
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 1419 1404 0.00 14.89 0.27 0.43
2 Ag 818 810 0.00 11.37 0.09 0.17
3 Ag 270 267 0.00 26.17 0.29 0.45
4 Au 93 92 0.00 0.00 0.00 0.00
5 B1u 1280 1266 389.87 0.00 0.00 0.00
6 B1u 728 721 213.66 0.00 0.00 0.00
7 B2g 647 641 0.00 0.05 0.75 0.86
8 B2u 1803 1784 492.81 0.00 0.00 0.00
9 B2u 191 189 0.15 0.00 0.00 0.00
10 B3g 1778 1760 0.00 9.25 0.75 0.86
11 B3g 462 457 0.00 8.44 0.75 0.86
12 B3u 399 395 10.22 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 4943.7 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 4892.8 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 PBEPBEultrafine/6-31G(2df,p)
ABC
0.21405 0.11566 0.07508

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G(2df,p)

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.921
N2 0.000 0.000 -0.921
O3 0.000 1.109 1.381
O4 0.000 -1.109 1.381
O5 0.000 1.109 -1.381
O6 0.000 -1.109 -1.381

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.84171.20111.20112.55522.5552
N21.84172.55522.55521.20111.2011
O31.20112.55522.21902.76193.5429
O41.20112.55522.21903.54292.7619
O52.55521.20112.76193.54292.2190
O62.55521.20113.54292.76192.2190

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 112.524 N1 N2 O6 112.524
N2 N1 O3 112.524 N2 N1 O4 112.524
O3 N1 O4 134.953 O5 N2 O6 134.953
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.501      
2 N 0.501      
3 O -0.251      
4 O -0.251      
5 O -0.251      
6 O -0.251      


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 -28.797 0.000 0.000
y 0.000 -34.616 0.000
z 0.000 0.000 -32.755
Traceless
 xyz
x 4.888 0.000 0.000
y 0.000 -3.840 0.000
z 0.000 0.000 -1.048
Polar
3z2-r2-2.096
x2-y25.818
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.528 0.000 0.000
y 0.000 6.337 0.000
z 0.000 0.000 7.195


<r2> (average value of r2) Å2
<r2> 132.308
(<r2>)1/2 11.503