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

using model chemistry: B3LYP/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at B3LYP/6-31G**
 hartrees
Energy at 0K-410.168240
Energy at 298.15K 
HF Energy-410.168240
Nuclear repulsion energy236.220867
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 B3LYP/6-31G**
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 1461 1404 0.00 15.70 0.40 0.58
2 Ag 839 806 0.00 12.73 0.11 0.20
3 Ag 300 288 0.00 31.86 0.31 0.47
4 Au 95 92 0.00 0.00 0.00 0.00
5 B1u 1330 1278 449.22 0.00 0.00 0.00
6 B1u 756 727 233.68 0.00 0.00 0.00
7 B2g 682 655 0.00 0.28 0.75 0.86
8 B2u 1858 1785 584.36 0.00 0.00 0.00
9 B2u 229 220 0.23 0.00 0.00 0.00
10 B3g 1831 1759 0.00 6.43 0.75 0.86
11 B3g 501 481 0.00 9.32 0.75 0.86
12 B3u 434 417 16.63 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5157.7 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 4955.5 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 B3LYP/6-31G**
ABC
0.21620 0.12120 0.07766

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.891
N2 0.000 0.000 -0.891
O3 0.000 1.104 1.351
O4 0.000 -1.104 1.351
O5 0.000 1.104 -1.351
O6 0.000 -1.104 -1.351

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.78191.19611.19612.49942.4994
N21.78192.49942.49941.19611.1961
O31.19612.49942.20792.70293.4901
O41.19612.49942.20793.49012.7029
O52.49941.19612.70293.49012.2079
O62.49941.19613.49012.70292.2079

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 112.644 N1 N2 O6 112.644
N2 N1 O3 112.644 N2 N1 O4 112.644
O3 N1 O4 134.713 O5 N2 O6 134.713
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.589      
2 N 0.589      
3 O -0.294      
4 O -0.294      
5 O -0.294      
6 O -0.294      


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 -28.902 0.000 0.000
y 0.000 -35.537 0.000
z 0.000 0.000 -33.540
Traceless
 xyz
x 5.636 0.000 0.000
y 0.000 -4.317 0.000
z 0.000 0.000 -1.320
Polar
3z2-r2-2.639
x2-y26.635
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.924 0.000 0.000
y 0.000 6.168 0.000
z 0.000 0.000 6.342


<r2> (average value of r2) Å2
<r2> 128.957
(<r2>)1/2 11.356