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

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

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-pVDZ
 hartrees
Energy at 0K-152.494006
Energy at 298.15K-152.496786
HF Energy-152.061128
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.541140
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-pVDZ
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' 3902 3820        
2 A' 3814 3733        
3 A' 3781 3701        
4 A' 1724 1687        
5 A' 1685 1649        
6 A' 396 387        
7 A' 192 188        
8 A' 153 150        
9 A" 3915 3832        
10 A" 651 637        
11 A" 177 173        
12 A" 82 80        

Unscaled Zero Point Vibrational Energy (zpe) 10235.0 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 10018.0 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)/cc-pVDZ
ABC
6.69041 0.21495 0.21433

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.087 0.548 0.000
O2 0.007 1.515 0.000
O3 0.007 -1.409 0.000
H4 0.933 1.790 0.000
H5 -0.570 -1.595 0.754
H6 -0.570 -1.595 -0.754

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97071.95821.50322.36472.3647
O20.97072.92410.96573.25213.2521
O31.95822.92413.33010.96800.9680
H41.50320.96573.33013.77983.7798
H52.36473.25210.96803.77981.5086
H62.36473.25210.96803.77981.5086

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 101.849 H1 O3 H5 102.494
H1 O3 H6 102.494 O2 H1 O3 173.002
H5 O3 H6 102.384
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability