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

using model chemistry: B3LYP/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 B3LYP/6-31G**
 hartrees
Energy at 0K-152.851492
Energy at 298.15K-152.854254
HF Energy-152.851492
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.856132
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/6-31G**
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 45.00      
2 A' 3793 3645 9.25      
3 A' 3688 3543 260.12      
4 A' 1695 1628 66.84      
5 A' 1661 1596 69.51      
6 A' 443 425 31.87      
7 A' 219 211 157.28      
8 A' 147 141 238.32      
9 A" 3901 3748 46.88      
10 A" 671 645 116.43      
11 A" 174 167 177.96      
12 A" 36 35 34.92      

Unscaled Zero Point Vibrational Energy (zpe) 10153.2 cm-1
Scaled (by 0.9608) Zero Point Vibrational Energy (zpe) 9755.2 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/6-31G**
ABC
6.68321 0.22174 0.22122

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.161 0.517 0.000
O2 0.007 1.478 0.000
O3 0.007 -1.405 0.000
H4 0.894 1.856 0.000
H5 -0.583 -1.480 0.763
H6 -0.583 -1.480 -0.763

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97341.92871.52642.26352.2635
O20.97342.88350.96443.11113.1111
O31.92872.88353.38010.96680.9668
H41.52640.96443.38013.72723.7272
H52.26353.11110.96683.72721.5251
H62.26353.11110.96683.72721.5251

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 103.940 H1 O3 H5 97.225
H1 O3 H6 97.225 O2 H1 O3 166.262
H5 O3 H6 104.143
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.305      
2 O -0.662      
3 O -0.587      
4 H 0.293      
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
  -0.351 -1.992 0.000 2.023
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.751 6.320 0.000
y 6.320 -13.923 0.000
z 0.000 0.000 -11.350
Traceless
 xyz
x 1.886 6.320 0.000
y 6.320 -2.873 0.000
z 0.000 0.000 0.987
Polar
3z2-r21.974
x2-y23.172
xy6.320
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.684 0.330 0.000
y 0.330 2.008 0.000
z 0.000 0.000 1.496


<r2> (average value of r2) Å2
<r2> 51.541
(<r2>)1/2 7.179