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

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/6-311G**
 hartrees
Energy at 0K-410.008828
Energy at 298.15K 
HF Energy-409.559305
Nuclear repulsion energy235.979120
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 B2PLYP=FULLultrafine/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 1415 1415 0.00 13.27 0.37 0.54
2 Ag 837 837 0.00 14.48 0.12 0.21
3 Ag 286 286 0.00 40.25 0.30 0.46
4 Au 98 98 0.00 0.00 0.00 0.00
5 B1u 1280 1280 450.30 0.00 0.00 0.00
6 B1u 760 760 252.55 0.00 0.00 0.00
7 B2g 664 664 0.00 0.55 0.75 0.86
8 B2u 1828 1828 504.92 0.00 0.00 0.00
9 B2u 223 223 0.18 0.00 0.00 0.00
10 B3g 1800 1800 0.00 10.64 0.75 0.86
11 B3g 494 494 0.00 12.94 0.75 0.86
12 B3u 426 426 12.32 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5055.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5055.2 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 B2PLYP=FULLultrafine/6-311G**
ABC
0.21653 0.12027 0.07732

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.897
N2 0.000 0.000 -0.897
O3 0.000 1.103 1.356
O4 0.000 -1.103 1.356
O5 0.000 1.103 -1.356
O6 0.000 -1.103 -1.356

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.79431.19471.19472.50862.5086
N21.79432.50862.50861.19471.1947
O31.19472.50862.20622.71173.4958
O41.19472.50862.20623.49582.7117
O52.50861.19472.71173.49582.2062
O62.50861.19473.49582.71172.2062

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 112.579 N1 N2 O6 112.579
N2 N1 O3 112.579 N2 N1 O4 112.579
O3 N1 O4 134.843 O5 N2 O6 134.843
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.336      
2 N 0.336      
3 O -0.168      
4 O -0.168      
5 O -0.168      
6 O -0.168      


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 -29.144 0.000 0.000
y 0.000 -36.120 0.000
z 0.000 0.000 -33.879
Traceless
 xyz
x 5.855 0.000 0.000
y 0.000 -4.609 0.000
z 0.000 0.000 -1.246
Polar
3z2-r2-2.493
x2-y26.976
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.781 0.000 0.000
y 0.000 6.423 0.000
z 0.000 0.000 6.737


<r2> (average value of r2) Å2
<r2> 129.676
(<r2>)1/2 11.388