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

using model chemistry: B3PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at B3PW91/cc-pVTZ
 hartrees
Energy at 0K-410.176956
Energy at 298.15K 
HF Energy-410.176956
Nuclear repulsion energy238.576524
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 B3PW91/cc-pVTZ
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 1472 1416 0.00      
2 Ag 862 829 0.00      
3 Ag 309 297 0.00      
4 Au 90 87 0.00      
5 B1u 1334 1283 466.17      
6 B1u 775 745 258.85      
7 B2g 724 696 0.00      
8 B2u 1870 1799 702.35      
9 B2u 237 228 0.10      
10 B3g 1838 1768 0.00      
11 B3g 515 495 0.00      
12 B3u 456 438 16.91      

Unscaled Zero Point Vibrational Energy (zpe) 5241.1 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 5039.8 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 B3PW91/cc-pVTZ
ABC
0.22125 0.12304 0.07907

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.886
N2 0.000 0.000 -0.886
O3 0.000 1.091 1.341
O4 0.000 -1.091 1.341
O5 0.000 1.091 -1.341
O6 0.000 -1.091 -1.341

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.77221.18221.18222.47992.4799
N21.77222.47992.47991.18221.1822
O31.18222.47992.18262.68173.4576
O41.18222.47992.18263.45762.6817
O52.47991.18222.68173.45762.1826
O62.47991.18223.45762.68172.1826

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 112.622 N1 N2 O6 112.622
N2 N1 O3 112.622 N2 N1 O4 112.622
O3 N1 O4 134.756 O5 N2 O6 134.756
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.338      
2 N 0.338      
3 O -0.169      
4 O -0.169      
5 O -0.169      
6 O -0.169      


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 -28.917 0.000 0.000
y 0.000 -35.741 0.000
z 0.000 0.000 -33.750
Traceless
 xyz
x 5.829 0.000 0.000
y 0.000 -4.408 0.000
z 0.000 0.000 -1.421
Polar
3z2-r2-2.842
x2-y26.824
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.328 0.000 0.000
y 0.000 6.532 0.000
z 0.000 0.000 6.784


<r2> (average value of r2) Å2
<r2> 127.119
(<r2>)1/2 11.275