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

using model chemistry: MP2/TZVP

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/TZVP
 hartrees
Energy at 0K-152.561397
Energy at 298.15K-152.564201
HF Energy-152.119319
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.573329
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/TZVP
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' 3946 3740 82.70      
2 A' 3849 3648 13.38      
3 A' 3769 3572 258.32      
4 A' 1650 1564 46.42      
5 A' 1622 1537 72.99      
6 A' 373 353 135.72      
7 A' 186 177 117.32      
8 A' 167 159 164.62      
9 A" 3968 3761 76.50      
10 A" 644 610 180.00      
11 A" 154 146 165.64      
12 A" 124 118 27.58      

Unscaled Zero Point Vibrational Energy (zpe) 10224.8 cm-1
Scaled (by 0.9479) Zero Point Vibrational Energy (zpe) 9692.1 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/TZVP
ABC
7.53711 0.21384 0.21360

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.173 0.540 0.000
O2 0.005 1.494 0.000
O3 0.005 -1.402 0.000
H4 0.884 1.880 0.000
H5 -0.565 -1.577 0.757
H6 -0.565 -1.577 -0.757

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96821.95011.51652.36672.3667
O20.96822.89630.96003.21373.2137
O31.95012.89633.39810.96370.9637
H41.51650.96003.39813.82413.8241
H52.36673.21370.96373.82411.5141
H62.36673.21370.96373.82411.5141

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 103.717 H1 O3 H5 103.382
H1 O3 H6 103.382 O2 H1 O3 165.047
H5 O3 H6 103.553
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability