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

using model chemistry: B1B95/6-31+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 B1B95/6-31+G**
 hartrees
Energy at 0K-410.083461
Energy at 298.15K-410.086929
Nuclear repulsion energy237.867072
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 B1B95/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 1486 1421 0.00      
2 Ag 845 809 0.00      
3 Ag 316 302 0.00      
4 Au 88 84 0.00      
5 B1u 1355 1297 479.06      
6 B1u 758 725 258.26      
7 B2g 702 671 0.00      
8 B2u 1902 1819 726.56      
9 B2u 253 242 0.07      
10 B3g 1870 1789 0.00      
11 B3g 508 486 0.00      
12 B3u 448 429 16.63      

Unscaled Zero Point Vibrational Energy (zpe) 5264.8 cm-1
Scaled (by 0.9566) Zero Point Vibrational Energy (zpe) 5036.3 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 B1B95/6-31+G**
ABC
0.21871 0.12326 0.07883

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31+G**

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.883
N2 0.000 0.000 -0.883
O3 0.000 1.098 1.340
O4 0.000 -1.098 1.340
O5 0.000 1.098 -1.340
O6 0.000 -1.098 -1.340

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.76701.18881.18882.47972.4797
N21.76702.47972.47971.18881.1888
O31.18882.47972.19522.68023.4644
O41.18882.47972.19523.46442.6802
O52.47971.18882.68023.46442.1952
O62.47971.18883.46442.68022.1952

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 112.588 N1 N2 O6 112.588
N2 N1 O3 112.588 N2 N1 O4 112.588
O3 N1 O4 134.825 O5 N2 O6 134.825
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.064      
2 N 0.064      
3 O -0.032      
4 O -0.032      
5 O -0.032      
6 O -0.032      


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 -29.499 0.000 0.000
y 0.000 -36.184 0.000
z 0.000 0.000 -34.709
Traceless
 xyz
x 5.947 0.000 0.000
y 0.000 -4.080 0.000
z 0.000 0.000 -1.867
Polar
3z2-r2-3.734
x2-y26.685
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.650 0.000 0.000
y 0.000 7.048 0.000
z 0.000 0.000 7.569


<r2> (average value of r2) Å2
<r2> 127.848
(<r2>)1/2 11.307