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

using model chemistry: CCSD(T)/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)/aug-cc-pVQZ
 hartrees
Energy at 0K-152.735304
Energy at 298.15K-152.738027
HF Energy-152.137289
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.615706
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)/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' 3912 3761        
2 A' 3826 3678        
3 A' 3749 3604        
4 A' 1670 1605        
5 A' 1650 1587        
6 A' 353 339        
7 A' 185 177        
8 A' 150 144        
9 A" 3932 3780        
10 A" 618 594        
11 A" 141 135        
12 A" 127 122        

Unscaled Zero Point Vibrational Energy (zpe) 10155.6 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 9763.6 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)/aug-cc-pVQZ
ABC
7.25651 0.21399 0.21397

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.097 0.557 0.000
O2 -0.000 1.518 0.000
O3 -0.000 -1.392 0.000
H4 0.897 1.853 0.000
H5 -0.494 -1.708 0.760
H6 -0.494 -1.708 -0.760

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96531.95191.52312.46102.4610
O20.96532.90990.95823.35033.3503
O31.95192.90993.36700.95970.9597
H41.52310.95823.36703.89773.8977
H52.46103.35030.95973.89771.5203
H62.46103.35030.95973.89771.5203

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 104.715 H1 O3 H5 110.726
H1 O3 H6 110.726 O2 H1 O3 171.378
H5 O3 H6 104.761
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability