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

using model chemistry: CCSD(T)=FULL/aug-cc-pVQZ

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)=FULL/aug-cc-pVQZ
 hartrees
Energy at 0K-152.798835
Energy at 298.15K-152.801595
HF Energy-152.137457
Nuclear repulsion energy36.704968
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)=FULL/aug-cc-pVQZ
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' 3923 3758        
2 A' 3836 3675        
3 A' 3753 3596        
4 A' 1674 1604        
5 A' 1655 1586        
6 A' 358 343        
7 A' 188 180        
8 A' 155 148        
9 A" 3941 3776        
10 A" 628 601        
11 A" 144 138        
12 A" 130 125        

Unscaled Zero Point Vibrational Energy (zpe) 10192.3 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 9764.2 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)=FULL/aug-cc-pVQZ
ABC
7.27852 0.21543 0.21540

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.095 0.553 0.000
O2 -0.000 1.513 0.000
O3 -0.000 -1.387 0.000
H4 0.896 1.848 0.000
H5 -0.492 -1.702 0.760
H6 -0.492 -1.702 -0.760

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96431.94271.52232.45122.4512
O20.96432.89990.95663.33983.3398
O31.94272.89993.35680.95830.9583
H41.52230.95663.35683.88663.8866
H52.45123.33980.95833.88661.5193
H62.45123.33980.95833.88661.5193

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 104.835 H1 O3 H5 110.693
H1 O3 H6 110.693 O2 H1 O3 171.519
H5 O3 H6 104.874
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability