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: TPSSh/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-410.269061
Energy at 298.15K 
HF Energy-410.269061
Nuclear repulsion energy234.760156
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/daug-cc-pVDZ
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 1439 1439 0.00 22.63 0.58 0.73
2 Ag 832 832 0.00 24.50 0.11 0.20
3 Ag 279 279 0.00 40.64 0.28 0.43
4 Au 87 87 0.00 0.00 0.00 0.00
5 B1u 1294 1294 463.87 0.00 0.00 0.00
6 B1u 735 735 257.05 0.00 0.00 0.00
7 B2g 675 675 0.00 0.34 0.75 0.86
8 B2u 1815 1815 660.97 0.00 0.00 0.00
9 B2u 199 199 0.03 0.00 0.00 0.00
10 B3g 1783 1783 0.00 15.52 0.75 0.86
11 B3g 474 474 0.00 8.26 0.75 0.86
12 B3u 420 420 12.62 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5015.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 5015.3 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/daug-cc-pVDZ
ABC
0.21631 0.11752 0.07615

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/daug-cc-pVDZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.910
N2 0.000 0.000 -0.910
O3 0.000 1.104 1.371
O4 0.000 -1.104 1.371
O5 0.000 1.104 -1.371
O6 0.000 -1.104 -1.371

Atom - Atom Distances (Å)
  N1 N2 O3 O4 O5 O6
N11.82001.19611.19612.53402.5340
N21.82002.53402.53401.19611.1961
O31.19612.53402.20742.74203.5201
O41.19612.53402.20743.52012.7420
O52.53401.19612.74203.52012.2074
O62.53401.19613.52012.74202.2074

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 112.669 N1 N2 O6 112.669
N2 N1 O3 112.669 N2 N1 O4 112.669
O3 N1 O4 134.662 O5 N2 O6 134.662
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N 1.501      
2 N 1.501      
3 O -0.750      
4 O -0.750      
5 O -0.750      
6 O -0.750      


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 3.320 0.000 0.000
y 0.000 7.337 0.000
z 0.000 0.000 8.653


<r2> (average value of r2) Å2
<r2> 131.427
(<r2>)1/2 11.464