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

using model chemistry: B3LYP/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 B3LYP/6-311G*
 hartrees
Energy at 0K-152.881596
Energy at 298.15K 
HF Energy-152.881596
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy37.194797
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/6-311G*
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' 3849 3719 36.73      
2 A' 3771 3644 2.78      
3 A' 3650 3527 247.18      
4 A' 1738 1680 79.73      
5 A' 1716 1658 105.28      
6 A' 461 445 60.33      
7 A' 230 222 75.19      
8 A' 136 131 391.32      
9 A" 3881 3750 37.63      
10 A" 746 721 178.62      
11 A" 188 182 214.76      
12 A" 45i 43i 35.41      

Unscaled Zero Point Vibrational Energy (zpe) 10159.7 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 9817.4 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/6-311G*
ABC
6.92111 0.22862 0.22853

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.165 0.498 0.000
O2 0.004 1.455 0.000
O3 0.004 -1.370 0.000
H4 0.869 1.875 0.000
H5 -0.550 -1.527 0.772
H6 -0.550 -1.527 -0.772

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97061.87471.54712.28202.2820
O20.97062.82510.96143.13003.1300
O31.87472.82513.35850.96340.9634
H41.54710.96143.35853.76653.7665
H52.28203.13000.96343.76651.5444
H62.28203.13000.96343.76651.5444

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 106.404 H1 O3 H5 102.225
H1 O3 H6 102.225 O2 H1 O3 165.579
H5 O3 H6 106.557
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.417      
2 O -0.855      
3 O -0.793      
4 H 0.386      
5 H 0.423      
6 H 0.423      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.246 -2.326 0.000 2.339
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.231 7.027 0.000
y 7.027 -13.370 0.000
z 0.000 0.000 -11.508
Traceless
 xyz
x 1.207 7.027 0.000
y 7.027 -2.000 0.000
z 0.000 0.000 0.793
Polar
3z2-r21.586
x2-y22.138
xy7.027
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.623 0.382 0.000
y 0.382 2.085 0.000
z 0.000 0.000 1.585


<r2> (average value of r2) Å2
<r2> 50.480
(<r2>)1/2 7.105