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

using model chemistry: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2D 1Ag
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-407.872722
Energy at 298.15K 
HF Energy-407.872722
Nuclear repulsion energy241.184587
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 HF/LANL2DZ
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 1366 1229 0.00 75.25 0.61 0.76
2 Ag 852 767 0.00 33.32 0.31 0.47
3 Ag 432 389 0.00 48.41 0.41 0.58
4 Au 63 57 0.00 0.00 0.00 0.00
5 B1u 1375 1237 334.65 0.00 0.00 0.00
6 B1u 805 725 196.27 0.00 0.75 0.86
7 B2g 816 735 0.00 2.77 0.75 0.86
8 B2u 1686 1518 1105.56 0.00 0.70 0.82
9 B2u 338 304 0.16 0.00 0.32 0.48
10 B3g 1674 1507 0.00 3.12 0.75 0.86
11 B3g 581 523 0.00 6.74 0.75 0.86
12 B3u 544 490 31.96 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5266.9 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 4739.7 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 HF/LANL2DZ
ABC
0.21616 0.13502 0.08311

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.803
N2 0.000 0.000 -0.803
O3 0.000 1.104 1.292
O4 0.000 -1.104 1.292
O5 0.000 1.104 -1.292
O6 0.000 -1.104 -1.292

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.60601.20751.20752.36812.3681
N21.60602.36812.36811.20751.2075
O31.20752.36812.20812.58403.3989
O41.20752.36812.20813.39892.5840
O52.36811.20752.58403.39892.2081
O62.36811.20753.39892.58402.2081

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 113.889 N1 N2 O6 113.889
N2 N1 O3 113.889 N2 N1 O4 113.889
O3 N1 O4 132.222 O5 N2 O6 132.222
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.389      
2 N 0.389      
3 O -0.195      
4 O -0.195      
5 O -0.195      
6 O -0.195      


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 -29.945 0.000 0.000
y 0.000 -40.334 0.000
z 0.000 0.000 -37.517
Traceless
 xyz
x 8.980 0.000 0.000
y 0.000 -6.603 0.000
z 0.000 0.000 -2.378
Polar
3z2-r2-4.755
x2-y210.389
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.563 0.000 0.000
y 0.000 7.595 0.000
z 0.000 0.000 5.033


<r2> (average value of r2) Å2
<r2> 123.891
(<r2>)1/2 11.131