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

using model chemistry: CCSD(T)_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 CCSD(T)_cp_opt/6-311+G(3df,2pd)
 hartrees
Energy at 0K-76.058239
Energy at 298.15K-76.060876
HF Energy-76.058239
Nuclear repulsion energy9.173117
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)_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' 3939 3939        
2 A' 3857 3857        
3 A' 3797 3797        
4 A' 1669 1669        
5 A' 1650 1650        
6 A' 337 337        
7 A' 170 170        
8 A' 141 141        
9 A" 3954 3954        
10 A" 590 590        
11 A" 139 139        
12 A" 121 121        

Unscaled Zero Point Vibrational Energy (zpe) 10182.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10182.5 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 CCSD(T)_cp_opt/6-311+G(3df,2pd)
ABC
7.29094 0.20654 0.20652

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.091 0.586 0.000
O2 -0.001 1.546 0.000
O3 -0.001 -1.417 0.000
H4 0.900 1.872 0.000
H5 -0.487 -1.746 0.759
H6 -0.487 -1.746 -0.759

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96422.00491.51912.51942.5194
O20.96422.96260.95803.41273.4127
O32.00492.96263.40980.95950.9595
H41.51910.95803.40983.94813.9481
H52.51943.41270.95953.94811.5175
H62.51943.41270.95953.94811.5175

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 104.428 H1 O3 H5 111.455
H1 O3 H6 111.455 O2 H1 O3 171.899
H5 O3 H6 104.518
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability