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All results from a given calculation for H2OH2O (water dimer)

using model chemistry: PBEPBEultrafine_cp_opt/6-311+G(3df,2pd)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBEultrafine_cp_opt/6-311+G(3df,2pd)
 hartrees
Energy at 0K-152.764239
Energy at 298.15K-152.767049
Nuclear repulsion energy36.461880
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 PBEPBEultrafine_cp_opt/6-311+G(3df,2pd)
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 3797 3759 66.96      
2 A 3717 3680 9.88      
3 A 3567 3532 379.77      
4 A 1612 1596 28.97      
5 A 1594 1578 85.94      
6 A 378 375 39.93      
7 A 192 190 212.99      
8 A 160 158 85.51      
9 A 3816 3778 72.48      
10 A 636 629 87.24      
11 A 156 154 3.54      
12 A 131 130 170.80      

Unscaled Zero Point Vibrational Energy (zpe) 9877.6 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 9778.9 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 PBEPBEultrafine_cp_opt/6-311+G(3df,2pd)
ABC
6.93313 0.21476 0.21460

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine_cp_opt/6-311+G(3df,2pd)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.108 0.540 0.000
O2 0.003 1.513 0.000
O3 0.003 -1.398 0.000
H4 0.908 1.856 0.000
H5 -0.530 -1.658 0.767
H6 -0.530 -1.658 -0.767
X7 1.013 0.883 0.000
X8 -1.063 -1.919 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6 X7 X8
H10.97881.94051.53982.41402.41400.96792.7232
O20.97882.91070.96793.30583.30581.19113.5932
O31.94052.91073.37700.96980.96982.49431.1862
H41.53980.96793.37703.87353.87350.97884.2579
H52.41403.30580.96983.87351.53453.07030.9698
H62.41403.30580.96983.87351.53453.07030.9698
X70.96791.19112.49430.97883.07033.07033.4868
X82.72323.59321.18624.25790.96980.96983.4868

picture of water dimer state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H1 O2 H4 104.553 H1 O3 H5 107.335
H1 O3 H6 107.335 O2 H1 O3 170.699
H5 O3 H6 104.589
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability