return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B2PLYP=FULLultrafine/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 B2PLYP=FULLultrafine/cc-pVTZ
 hartrees
Energy at 0K-410.107727
Energy at 298.15K 
HF Energy-409.609625
Nuclear repulsion energy236.440685
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 B2PLYP=FULLultrafine/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 1408 1345 0.00 15.23 0.45 0.62
2 Ag 835 798 0.00 17.53 0.10 0.19
3 Ag 288 276 0.00 41.26 0.29 0.45
4 Au 94 90 0.00 0.00 0.00 0.00
5 B1u 1271 1215 434.82 0.00 0.00 0.00
6 B1u 754 720 257.15 0.00 0.00 0.00
7 B2g 692 661 0.00 0.44 0.75 0.86
8 B2u 1813 1732 541.71 0.00 0.00 0.00
9 B2u 222 212 0.07 0.00 0.00 0.00
10 B3g 1784 1705 0.00 12.43 0.75 0.86
11 B3g 495 473 0.00 12.29 0.75 0.86
12 B3u 434 415 13.90 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5045.4 cm-1
Scaled (by 0.9554) Zero Point Vibrational Energy (zpe) 4820.4 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 B2PLYP=FULLultrafine/cc-pVTZ
ABC
0.21753 0.12063 0.07760

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.895
N2 0.000 0.000 -0.895
O3 0.000 1.101 1.353
O4 0.000 -1.101 1.353
O5 0.000 1.101 -1.353
O6 0.000 -1.101 -1.353

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.79071.19201.19202.50342.5034
N21.79072.50342.50341.19201.1920
O31.19202.50342.20132.70613.4884
O41.19202.50342.20133.48842.7061
O52.50341.19202.70613.48842.2013
O62.50341.19203.48842.70612.2013

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 112.580 N1 N2 O6 112.580
N2 N1 O3 112.580 N2 N1 O4 112.580
O3 N1 O4 134.839 O5 N2 O6 134.839
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP=FULLultrafine/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 0.287      
2 N 0.287      
3 O -0.144      
4 O -0.144      
5 O -0.144      
6 O -0.144      


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 -29.193 0.000 0.000
y 0.000 -35.869 0.000
z 0.000 0.000 -33.906
Traceless
 xyz
x 5.694 0.000 0.000
y 0.000 -4.319 0.000
z 0.000 0.000 -1.375
Polar
3z2-r2-2.751
x2-y26.675
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 6.700 0.000
z 0.000 0.000 7.294


<r2> (average value of r2) Å2
<r2> 129.257
(<r2>)1/2 11.369