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

using model chemistry: B2PLYP=FULL/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=FULL/cc-pVTZ
 hartrees
Energy at 0K-410.107727
Energy at 298.15K 
HF Energy-409.609657
Nuclear repulsion energy236.487811
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=FULL/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 1407 1345 0.00 15.24 0.45 0.62
2 Ag 836 799 0.00 17.62 0.10 0.19
3 Ag 289 276 0.00 41.26 0.29 0.45
4 Au 95 90 0.00 0.00 0.00 0.00
5 B1u 1271 1215 433.68 0.00 0.00 0.00
6 B1u 754 720 255.79 0.00 0.00 0.00
7 B2g 692 662 0.00 0.44 0.75 0.86
8 B2u 1812 1732 541.15 0.00 0.00 0.00
9 B2u 223 213 0.07 0.00 0.00 0.00
10 B3g 1784 1705 0.00 12.37 0.75 0.86
11 B3g 496 474 0.00 12.29 0.75 0.86
12 B3u 435 416 13.94 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5046.8 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 4823.8 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=FULL/cc-pVTZ
ABC
0.21750 0.12077 0.07765

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/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