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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-152.410273
Energy at 298.15K-152.413122
HF Energy-152.028294
Counterpoise corrected energy-152.410273
CP Energy at 298.15K-152.413122
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.554561
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=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' 3885 3661 90.12      
2 A' 3763 3545 15.72      
3 A' 3709 3495 219.59      
4 A' 1768 1666 88.25      
5 A' 1732 1632 89.14      
6 A' 438 412 41.78      
7 A' 214 202 167.74      
8 A' 148 140 261.78      
9 A" 3895 3670 68.15      
10 A" 681 642 163.81      
11 A" 162 153 174.02      
12 A" 98 92 59.11      

Unscaled Zero Point Vibrational Energy (zpe) 10246.7 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 9654.5 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=FULL/6-31G*
ABC
6.69406 0.21648 0.21605

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.151 0.535 0.000
O2 0.006 1.499 0.000
O3 0.006 -1.414 0.000
H4 0.899 1.873 0.000
H5 -0.575 -1.543 0.766
H6 -0.575 -1.543 -0.766

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97501.95391.53292.33082.3308
O20.97502.91270.96753.19063.1906
O31.95392.91273.40570.97060.9706
H41.53290.96753.40573.79873.7987
H52.33083.19060.97063.79871.5322
H62.33083.19060.97063.79871.5322

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 104.204 H1 O3 H5 100.216
H1 O3 H6 100.216 O2 H1 O3 167.211
H5 O3 H6 104.242
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability