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All results from a given calculation for H2O2 (Hydrogen peroxide)

using model chemistry: MP4=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A
1 2 no C2h 1Ag

Conformer 1 (C2)

Jump to S1C2
Energy calculated at MP4=FULL/6-31G*
 hartrees
Energy at 0K-151.155169
Energy at 298.15K-151.157383
HF Energy-150.759199
Nuclear repulsion energy36.277341
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 MP4=FULL/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A 3707 3565        
2 A 1455 1399        
3 A 884 850        
4 A 324 311        
5 B 3710 3567        
6 B 1310 1260        

Unscaled Zero Point Vibrational Energy (zpe) 5694.9 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 5476.2 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 MP4=FULL/6-31G*
ABC
9.77385 0.85971 0.82308

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.739 -0.053
O2 0.000 -0.739 -0.053
H3 0.841 0.887 0.421
H4 -0.841 -0.887 0.421

Atom - Atom Distances (Å)
  O1 O2 H3 H4
O11.47800.97671.8908
O21.47801.89080.9767
H30.97671.89082.4445
H41.89080.97672.4445

picture of Hydrogen peroxide state 1 conformation 1
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