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 H2OO (water oxide)

using model chemistry: MP2/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/cc-pVQZ
 hartrees
Energy at 0K-151.303262
Energy at 298.15K 
HF Energy-150.784139
Nuclear repulsion energy36.308733
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 MP2/cc-pVQZ
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' 3711 3519 68.90 60.61 0.06 0.11
2 A' 1607 1524 88.08 3.70 0.65 0.79
3 A' 976 926 59.85 7.92 0.34 0.50
4 A' 800 759 118.75 7.73 0.19 0.32
5 A" 3822 3625 206.15 19.50 0.75 0.86
6 A" 954 904 0.03 2.52 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5934.8 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 5628.6 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 MP2/cc-pVQZ
ABC
9.78096 0.85001 0.82081

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.060 -0.637 0.000
O2 0.060 0.846 0.000
H3 -0.483 -0.835 0.776
H4 -0.483 -0.835 -0.776

Atom - Atom Distances (Å)
  O1 O2 H3 H4
O11.48350.96760.9676
O21.48351.92941.9294
H30.96761.92941.5525
H40.96761.92941.5525

picture of water oxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 O1 H3 101.772 O2 O1 H4 101.772
H3 O1 H4 106.693
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability