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

using model chemistry: TPSSh/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at TPSSh/TZVP
 hartrees
Energy at 0K-410.342226
Energy at 298.15K 
HF Energy-410.342226
Nuclear repulsion energy234.848052
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 TPSSh/TZVP
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 1435 1383 0.00 17.77 0.42 0.60
2 Ag 844 813 0.00 15.23 0.11 0.19
3 Ag 283 273 0.00 37.36 0.31 0.47
4 Au 86 83 0.00 0.00 0.00 0.00
5 B1u 1284 1238 507.93 0.00 0.00 0.00
6 B1u 752 725 285.11 0.00 0.00 0.00
7 B2g 646 622 0.00 0.59 0.75 0.86
8 B2u 1799 1734 680.77 0.00 0.00 0.00
9 B2u 206 198 0.13 0.00 0.00 0.00
10 B3g 1769 1705 0.00 13.27 0.75 0.86
11 B3g 477 459 0.00 10.68 0.75 0.86
12 B3u 416 401 11.15 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 4998.6 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 4817.2 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 TPSSh/TZVP
ABC
0.21812 0.11633 0.07587

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/TZVP

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.918
N2 0.000 0.000 -0.918
O3 0.000 1.099 1.377
O4 0.000 -1.099 1.377
O5 0.000 1.099 -1.377
O6 0.000 -1.099 -1.377

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.83521.19131.19132.54432.5443
N21.83522.54432.54431.19131.1913
O31.19132.54432.19822.75423.5239
O41.19132.54432.19823.52392.7542
O52.54431.19132.75423.52392.1982
O62.54431.19133.52392.75422.1982

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 112.690 N1 N2 O6 112.690
N2 N1 O3 112.690 N2 N1 O4 112.690
O3 N1 O4 134.620 O5 N2 O6 134.620
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.152      
2 N 0.152      
3 O -0.076      
4 O -0.076      
5 O -0.076      
6 O -0.076      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.298 0.000 0.000
y 0.000 6.930 0.000
z 0.000 0.000 7.618


<r2> (average value of r2) Å2
<r2> 131.860
(<r2>)1/2 11.483