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

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-410.063113
Energy at 298.15K 
HF Energy-410.063113
Nuclear repulsion energy239.201913
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 mPW1PW91/6-31G*
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 1500 1422 0.00 17.16 0.46 0.63
2 Ag 858 813 0.00 13.98 0.12 0.21
3 Ag 325 308 0.00 31.17 0.31 0.48
4 Au 96 91 0.00 0.00 0.00 0.00
5 B1u 1378 1306 436.80 0.00 0.00 0.00
6 B1u 778 738 224.07 0.00 0.00 0.00
7 B2g 723 686 0.00 0.40 0.75 0.86
8 B2u 1929 1829 629.10 0.00 0.00 0.00
9 B2u 253 240 0.26 0.00 0.00 0.00
10 B3g 1899 1801 0.00 5.42 0.75 0.86
11 B3g 531 503 0.00 8.92 0.75 0.86
12 B3u 461 437 18.82 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5364.2 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 5086.8 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 mPW1PW91/6-31G*
ABC
0.21906 0.12643 0.08016

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.867
N2 0.000 0.000 -0.867
O3 0.000 1.097 1.325
O4 0.000 -1.097 1.325
O5 0.000 1.097 -1.325
O6 0.000 -1.097 -1.325

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.73431.18831.18832.45092.4509
N21.73432.45092.45091.18831.1883
O31.18832.45092.19342.64943.4396
O41.18832.45092.19343.43962.6494
O52.45091.18832.64943.43962.1934
O62.45091.18833.43962.64942.1934

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 112.647 N1 N2 O6 112.647
N2 N1 O3 112.647 N2 N1 O4 112.647
O3 N1 O4 134.706 O5 N2 O6 134.706
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.611      
2 N 0.611      
3 O -0.305      
4 O -0.305      
5 O -0.305      
6 O -0.305      


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 -28.847 0.000 0.000
y 0.000 -35.506 0.000
z 0.000 0.000 -33.632
Traceless
 xyz
x 5.722 0.000 0.000
y 0.000 -4.267 0.000
z 0.000 0.000 -1.455
Polar
3z2-r2-2.910
x2-y26.659
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.923 0.000 0.000
y 0.000 6.114 0.000
z 0.000 0.000 5.931


<r2> (average value of r2) Å2
<r2> 125.573
(<r2>)1/2 11.206