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

using model chemistry: PBEPBEultrafine_cp_opt/6-31G*

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/6-31G*
 hartrees
Energy at 0K-152.652967
Energy at 298.15K-152.655974
Nuclear repulsion energy37.201095
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/6-31G*
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 3708 3655 34.68      
2 A 3627 3575 3.73      
3 A 3480 3430 302.12      
4 A 1716 1692 56.64      
5 A 1680 1656 83.79      
6 A 429 423 59.56      
7 A 227 224 181.48      
8 A 178 176 154.67      
9 A 3747 3694 32.54      
10 A 695 685 139.93      
11 A 180 177 0.69      
12 A 138 136 195.18      

Unscaled Zero Point Vibrational Energy (zpe) 9902.6 cm-1
Scaled (by 0.9857) Zero Point Vibrational Energy (zpe) 9761.0 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/6-31G*
ABC
6.69302 0.21828 0.21786

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

Point Group is Ci

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.729 0.038 -0.643
O2 -1.396 0.073 0.076
O3 1.396 -0.073 -0.076
H4 -1.917 -0.741 -0.064
H5 1.917 0.741 0.064
H6 0.729 -0.038 0.643
X7 -1.250 -0.776 -0.784
X8 1.250 0.776 0.784

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6 X7 X8
H10.98202.20181.53462.82741.94520.97662.5482
O20.98202.80020.97663.38002.20181.21712.8274
O32.20182.80023.38000.97660.98202.82741.2171
H41.53460.97663.38004.11282.82740.98203.6123
H52.82743.38000.97664.11281.53463.61230.9820
H61.94522.20180.98202.82741.53462.54820.9766
X70.97661.21712.82740.98203.61232.54823.3332
X82.54822.82741.21713.61230.98200.97663.3332

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 103.166 H1 O3 H5 120.650
H1 O3 H6 62.025 O2 H1 O3 117.975
H5 O3 H6 103.166
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability