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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/TZVP
 hartrees
Energy at 0K-409.973953
Energy at 298.15K 
HF Energy-409.973953
Nuclear repulsion energy232.396695
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 PBEPBEultrafine/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 1403 1387 0.00 16.09 0.34 0.50
2 Ag 822 813 0.00 12.68 0.11 0.19
3 Ag 266 263 0.00 33.19 0.30 0.46
4 Au 85 84 0.00 0.00 0.00 0.00
5 B1u 1258 1244 461.14 0.00 0.00 0.00
6 B1u 735 727 260.31 0.00 0.00 0.00
7 B2g 609 603 0.00 0.46 0.75 0.86
8 B2u 1762 1742 594.58 0.00 0.00 0.00
9 B2u 196 194 0.09 0.00 0.00 0.00
10 B3g 1735 1715 0.00 16.16 0.75 0.86
11 B3g 452 447 0.00 10.58 0.75 0.86
12 B3u 393 388 8.29 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 4858.3 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 4802.9 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 PBEPBEultrafine/TZVP
ABC
0.21534 0.11256 0.07392

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.936
N2 0.000 0.000 -0.936
O3 0.000 1.106 1.399
O4 0.000 -1.106 1.399
O5 0.000 1.106 -1.399
O6 0.000 -1.106 -1.399

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.87261.19901.19902.58402.5840
N21.87262.58402.58401.19901.1990
O31.19902.58402.21232.79803.5669
O41.19902.58402.21233.56692.7980
O52.58401.19902.79803.56692.2123
O62.58401.19903.56692.79802.2123

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 112.699 N1 N2 O6 112.699
N2 N1 O3 112.699 N2 N1 O4 112.699
O3 N1 O4 134.602 O5 N2 O6 134.602
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.073      
2 N 0.073      
3 O -0.036      
4 O -0.036      
5 O -0.036      
6 O -0.036      


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 -29.507 0.000 0.000
y 0.000 -36.230 0.000
z 0.000 0.000 -34.052
Traceless
 xyz
x 5.634 0.000 0.000
y 0.000 -4.450 0.000
z 0.000 0.000 -1.184
Polar
3z2-r2-2.368
x2-y26.723
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.366 0.000 0.000
y 0.000 7.059 0.000
z 0.000 0.000 7.912


<r2> (average value of r2) Å2
<r2> 134.832
(<r2>)1/2 11.612