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

using model chemistry: QCISD/aug-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 QCISD/aug-cc-pVTZ
 hartrees
Energy at 0K-152.676219
Energy at 298.15K-152.678931
HF Energy-152.126680
Counterpoise corrected energy-152.676219
CP Energy at 298.15K-152.678931
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.464659
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 QCISD/aug-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' 3927 3780 105.60      
2 A' 3843 3698 8.67      
3 A' 3780 3638 235.13      
4 A' 1679 1616 40.60      
5 A' 1659 1596 86.69      
6 A' 350 337 55.25      
7 A' 178 171 144.27      
8 A' 149 143 133.29      
9 A" 3946 3798 77.71      
10 A" 608 586 98.94      
11 A" 142 137 66.29      
12 A" 129 124 100.83      

Unscaled Zero Point Vibrational Energy (zpe) 10195.0 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 9811.7 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 QCISD/aug-cc-pVTZ
ABC
7.28684 0.21065 0.21061

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.138 0.554 0.000
O2 0.005 1.510 0.000
O3 0.005 -1.414 0.000
H4 0.892 1.875 0.000
H5 -0.559 -1.596 0.758
H6 -0.559 -1.596 -0.758

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96561.97251.52152.38352.3835
O20.96562.92440.95893.24663.2466
O31.97252.92443.40700.96200.9620
H41.52150.95893.40703.83793.8379
H52.38353.24660.96203.83791.5153
H62.38353.24660.96203.83791.5153

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 104.480 H1 O3 H5 103.174
H1 O3 H6 103.174 O2 H1 O3 168.234
H5 O3 H6 103.923
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability