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

using model chemistry: BLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-410.193007
Energy at 298.15K 
HF Energy-410.193007
Nuclear repulsion energy228.599274
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 BLYP/6-31+G**
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 1370 1362 0.00 18.55 0.48 0.65
2 Ag 789 785 0.00 17.84 0.09 0.17
3 Ag 238 237 0.00 38.35 0.28 0.44
4 Au 80 79 0.00 0.00 0.00 0.00
5 B1u 1229 1222 466.32 0.00 0.00 0.00
6 B1u 698 694 260.75 0.00 0.00 0.00
7 B2g 585 581 0.00 0.29 0.75 0.86
8 B2u 1706 1696 576.05 0.00 0.00 0.00
9 B2u 170 169 0.05 0.00 0.00 0.00
10 B3g 1682 1673 0.00 27.30 0.75 0.86
11 B3g 420 418 0.00 9.89 0.75 0.86
12 B3u 371 369 9.24 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 4667.5 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 4642.7 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 BLYP/6-31+G**
ABC
0.21029 0.10757 0.07117

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.959
N2 0.000 0.000 -0.959
O3 0.000 1.119 1.431
O4 0.000 -1.119 1.431
O5 0.000 1.119 -1.431
O6 0.000 -1.119 -1.431

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.91821.21461.21462.63892.6389
N21.91822.63892.63891.21461.2146
O31.21462.63892.23872.86133.6330
O41.21462.63892.23873.63302.8613
O52.63891.21462.86133.63302.2387
O62.63891.21463.63302.86132.2387

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 112.846 N1 N2 O6 112.846
N2 N1 O3 112.846 N2 N1 O4 112.846
O3 N1 O4 134.308 O5 N2 O6 134.308
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.062      
2 N -0.062      
3 O 0.031      
4 O 0.031      
5 O 0.031      
6 O 0.031      


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 -30.057 0.000 0.000
y 0.000 -36.362 0.000
z 0.000 0.000 -34.715
Traceless
 xyz
x 5.481 0.000 0.000
y 0.000 -3.976 0.000
z 0.000 0.000 -1.506
Polar
3z2-r2-3.011
x2-y26.305
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.866 0.000 0.000
y 0.000 7.583 0.000
z 0.000 0.000 9.345


<r2> (average value of r2) Å2
<r2> 139.525
(<r2>)1/2 11.812