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

using model chemistry: B3LYPultrafine/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYPultrafine/6-31G**
 hartrees
Energy at 0K-152.851500
Energy at 298.15K 
HF Energy-152.851500
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.918172
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 B3LYPultrafine/6-31G**
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' 3879 3727 45.17      
2 A' 3792 3643 9.50      
3 A' 3687 3543 252.62      
4 A' 1693 1627 72.55      
5 A' 1662 1597 63.51      
6 A' 451 433 25.79      
7 A' 223 214 165.71      
8 A' 138 133 251.56      
9 A" 3899 3747 46.74      
10 A" 672 646 113.20      
11 A" 173 166 183.14      
12 A" 29i 28i 33.62      

Unscaled Zero Point Vibrational Energy (zpe) 10119.8 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 9723.1 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 B3LYPultrafine/6-31G**
ABC
6.70288 0.22316 0.22266

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.068 0.547 0.000
O2 0.008 1.516 0.000
O3 0.008 -1.408 0.000
H4 0.928 1.805 0.000
H5 -0.559 -1.610 0.758
H6 -0.559 -1.610 -0.758

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97071.95581.52362.37132.3713
O20.97072.92380.96443.26673.2667
O31.95582.92383.34170.96810.9681
H41.52360.96443.34173.80123.8012
H52.37133.26670.96813.80121.5166
H62.37133.26670.96813.80121.5166

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 103.870 H1 O3 H5 103.139
H1 O3 H6 103.139 O2 H1 O3 174.690
H5 O3 H6 103.135
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.304      
2 O -0.662      
3 O -0.587      
4 H 0.294      
5 H 0.325      
6 H 0.325      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.328 -1.786 0.000 1.815
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.771 6.272 0.000
y 6.272 -13.988 0.000
z 0.000 0.000 -11.354
Traceless
 xyz
x 1.900 6.272 0.000
y 6.272 -2.926 0.000
z 0.000 0.000 1.026
Polar
3z2-r22.052
x2-y23.218
xy6.272
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.681 0.318 0.000
y 0.318 2.014 0.000
z 0.000 0.000 1.495


<r2> (average value of r2) Å2
<r2> 51.262
(<r2>)1/2 7.160