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

using model chemistry: CCSD(T)/cc-pVTZ

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)/cc-pVTZ
 hartrees
Energy at 0K-152.673848
Energy at 298.15K-152.676553
HF Energy-152.120645
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.629260
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)/cc-pVTZ
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' 3919 3820        
2 A' 3832 3735        
3 A' 3775 3680        
4 A' 1695 1652        
5 A' 1665 1623        
6 A' 370 361        
7 A' 183 178        
8 A' 145 141        
9 A" 3934 3834        
10 A" 627 611        
11 A" 140 137        
12 A" 106 104        

Unscaled Zero Point Vibrational Energy (zpe) 10195.7 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 9938.8 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)/cc-pVTZ
ABC
7.02041 0.21439 0.21415

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.081 0.556 0.000
O2 0.004 1.517 0.000
O3 0.004 -1.399 0.000
H4 0.913 1.819 0.000
H5 -0.525 -1.662 0.758
H6 -0.525 -1.662 -0.758

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96491.95601.51302.42072.4207
O20.96492.91620.95863.31113.3111
O31.95602.91623.34400.96070.9607
H41.51300.95863.34403.84223.8422
H52.42073.31110.96073.84221.5151
H62.42073.31110.96073.84221.5151

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 103.726 H1 O3 H5 107.200
H1 O3 H6 107.200 O2 H1 O3 173.119
H5 O3 H6 104.102
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability