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

using model chemistry: PBEPBE/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/6-311G**
 hartrees
Energy at 0K-152.734316
Energy at 298.15K 
HF Energy-152.734316
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.872683
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 PBEPBE/6-311G**
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' 3778 3743 32.20      
2 A' 3699 3666 8.68      
3 A' 3558 3526 291.77      
4 A' 1626 1611 44.26      
5 A' 1602 1587 52.77      
6 A' 425 421 26.73      
7 A' 212 210 67.29      
8 A' 104 103 337.77      
9 A" 3799 3764 42.57      
10 A" 676 670 105.56      
11 A" 180 178 181.65      
12 A" 114i 113i 23.79      

Unscaled Zero Point Vibrational Energy (zpe) 9772.2 cm-1
Scaled (by 0.9909) Zero Point Vibrational Energy (zpe) 9683.3 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 PBEPBE/6-311G**
ABC
6.60095 0.22420 0.22359

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.076 0.543 0.000
O2 0.008 1.516 0.000
O3 0.008 -1.407 0.000
H4 0.933 1.803 0.000
H5 -0.565 -1.608 0.760
H6 -0.565 -1.608 -0.760

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97601.95141.52382.36952.3695
O20.97602.92380.96863.26623.2662
O31.95142.92383.34070.97240.9724
H41.52380.96863.34073.80203.8020
H52.36953.26620.97243.80201.5193
H62.36953.26620.97243.80201.5193

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 103.191 H1 O3 H5 103.118
H1 O3 H6 103.118 O2 H1 O3 174.005
H5 O3 H6 102.747
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.209      
2 O -0.507      
3 O -0.446      
4 H 0.226      
5 H 0.259      
6 H 0.259      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.320 -1.846 0.000 1.873
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.986 6.247 0.000
y 6.247 -14.314 0.000
z 0.000 0.000 -11.605
Traceless
 xyz
x 1.973 6.247 0.000
y 6.247 -3.019 0.000
z 0.000 0.000 1.045
Polar
3z2-r22.090
x2-y23.328
xy6.247
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.886 0.351 0.000
y 0.351 2.404 0.000
z 0.000 0.000 1.768


<r2> (average value of r2) Å2
<r2> 51.258
(<r2>)1/2 7.159