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

using model chemistry: CCSD(T)/6-311G*

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)/6-311G*
 hartrees
Energy at 0K-152.505644
Energy at 298.15K-152.508481
HF Energy-152.073458
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.876941
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)/6-311G*
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' 3912 3766        
2 A' 3816 3674        
3 A' 3782 3640        
4 A' 1789 1722        
5 A' 1749 1684        
6 A' 406 391        
7 A' 208 201        
8 A' 153 147        
9 A" 3935 3788        
10 A" 710 683        
11 A" 173 167        
12 A" 85 81        

Unscaled Zero Point Vibrational Energy (zpe) 10359.2 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 9971.7 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)/6-311G*
ABC
7.20525 0.21968 0.21951

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.062 0.538 0.000
O2 0.000 1.498 0.000
O3 0.000 -1.375 0.000
H4 0.900 1.828 0.000
H5 -0.483 -1.679 0.771
H6 -0.483 -1.679 -0.771

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96281.91321.53862.40912.4091
O20.96282.87300.95793.30503.3050
O31.91322.87303.32650.95950.9595
H41.53860.95793.32653.84763.8476
H52.40913.30500.95953.84761.5425
H62.40913.30500.95953.84761.5425

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 106.461 H1 O3 H5 109.457
H1 O3 H6 109.457 O2 H1 O3 174.496
H5 O3 H6 106.986
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability