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

using model chemistry: CCSD(T)/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 CCSD(T)/6-311+G(3df,2pd)
 hartrees
Energy at 0K-152.681236
Energy at 298.15K-152.684022
HF Energy-152.122574
Counterpoise corrected energy-76.058239
CP Energy at 298.15K-76.060876
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.581080
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 CCSD(T)/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' 3939 3939        
2 A' 3853 3853        
3 A' 3789 3789        
4 A' 1678 1678        
5 A' 1648 1648        
6 A' 365 365        
7 A' 182 182        
8 A' 155 155        
9 A" 3951 3951        
10 A" 639 639        
11 A" 157 157        
12 A" 134 134        

Unscaled Zero Point Vibrational Energy (zpe) 10245.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10245.0 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 CCSD(T)/6-311+G(3df,2pd)
ABC
7.23697 0.21311 0.21309

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.082 0.561 0.000
O2 0.000 1.523 0.000
O3 0.000 -1.394 0.000
H4 0.904 1.840 0.000
H5 -0.493 -1.713 0.759
H6 -0.493 -1.713 -0.759

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96481.95731.51992.46562.4656
O20.96482.91690.95803.35983.3598
O31.95732.91693.35790.95980.9598
H41.51990.95803.35793.89223.8922
H52.46563.35980.95983.89221.5182
H62.46563.35980.95983.89221.5182

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 104.453 H1 O3 H5 110.680
H1 O3 H6 110.680 O2 H1 O3 172.727
H5 O3 H6 104.538
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability