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

using model chemistry: B3LYP_cp/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP_cp/6-31+G**
 hartrees
Energy at 0K-152.876368
Energy at 298.15K-152.869637
Nuclear repulsion energy 
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 B3LYP/6-31+G**
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' 3898 3758 92.65      
2 A' 3809 3673 13.83      
3 A' 3693 3561 338.18      
4 A' 1634 1575 49.82      
5 A' 1616 1558 120.40      
6 A' 389 375 101.69      
7 A' 204 197 173.20      
8 A' 170 164 146.96      
9 A" 3925 3785 87.32      
10 A" 685 660 174.60      
11 A" 181 174 46.14      
12 A" 143 137 166.89      

Unscaled Zero Point Vibrational Energy (zpe) 10173.0 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 9808.8 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 B3LYP/6-31+G**
ABC
7.31604 0.21660 0.21633

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.172 0.533 0.000
O2 0.004 1.493 0.000
O3 0.004 -1.404 0.000
H4 0.873 1.913 0.000
H5 -0.555 -1.578 0.771
H6 -0.555 -1.578 -0.771

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97431.94441.54802.36252.3625
O20.97432.89690.96523.21563.2156
O31.94442.89693.42910.96850.9685
H41.54800.96523.42913.85043.8504
H52.36253.21560.96853.85041.5425
H62.36253.21560.96853.85041.5425

picture of water dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.424      
2 O -0.763      
3 O -0.757      
4 H 0.345      
5 H 0.375      
6 H 0.375      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.097 -3.062 0.000 3.063
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 53.220
(<r2>)1/2 7.295