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

using model chemistry: B3PW91/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 B3PW91/TZVP
 hartrees
Energy at 0K-410.168926
Energy at 298.15K 
HF Energy-410.168926
Nuclear repulsion energy237.820255
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/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 1470 1417 0.00 19.92 0.52 0.68
2 Ag 863 832 0.00 17.65 0.12 0.21
3 Ag 308 297 0.00 39.06 0.31 0.48
4 Au 86 83 0.00 0.00 0.00 0.00
5 B1u 1329 1281 498.98 0.00 0.00 0.00
6 B1u 778 750 275.28 0.00 0.00 0.00
7 B2g 685 661 0.00 0.70 0.75 0.86
8 B2u 1860 1793 736.68 0.00 0.00 0.00
9 B2u 237 228 0.13 0.00 0.00 0.00
10 B3g 1828 1763 0.00 10.35 0.75 0.86
11 B3g 507 489 0.00 10.37 0.75 0.86
12 B3u 447 431 14.20 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5198.6 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 5013.0 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/TZVP
ABC
0.22114 0.12131 0.07834

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.893
N2 0.000 0.000 -0.893
O3 0.000 1.092 1.350
O4 0.000 -1.092 1.350
O5 0.000 1.092 -1.350
O6 0.000 -1.092 -1.350

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.78651.18331.18332.49482.4948
N21.78652.49482.49481.18331.1833
O31.18332.49482.18312.70023.4723
O41.18332.49482.18313.47232.7002
O52.49481.18332.70023.47232.1831
O62.49481.18333.47232.70022.1831

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 112.709 N1 N2 O6 112.709
N2 N1 O3 112.709 N2 N1 O4 112.709
O3 N1 O4 134.582 O5 N2 O6 134.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.159      
2 N 0.159      
3 O -0.080      
4 O -0.080      
5 O -0.080      
6 O -0.080      


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 -29.181 0.000 0.000
y 0.000 -36.402 0.000
z 0.000 0.000 -34.341
Traceless
 xyz
x 6.191 0.000 0.000
y 0.000 -4.641 0.000
z 0.000 0.000 -1.550
Polar
3z2-r2-3.100
x2-y27.221
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.291 0.000 0.000
y 0.000 6.829 0.000
z 0.000 0.000 7.120


<r2> (average value of r2) Å2
<r2> 128.430
(<r2>)1/2 11.333