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

using model chemistry: B3LYP_cp_opt/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_cp_opt/6-31G*
 hartrees
Energy at 0K-76.408946
Energy at 298.15K-76.411847
HF Energy-76.408946
Nuclear repulsion energy9.082168
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_cp_opt/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' 3811 3660 48.07      
2 A' 3733 3585 6.42      
3 A' 3628 3484 258.79      
4 A' 1747 1677 67.40      
5 A' 1710 1642 92.57      
6 A' 405 389 77.67      
7 A' 214 205 156.23      
8 A' 168 162 177.53      
9 A" 3850 3697 39.53      
10 A" 677 650 163.64      
11 A" 165 158 3.71      
12 A" 127 122 192.59      

Unscaled Zero Point Vibrational Energy (zpe) 10116.8 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 9715.2 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_cp_opt/6-31G*
ABC
6.96032 0.21477 0.21459

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP_cp_opt/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.076 0.544 0.000
O2 0.002 1.518 0.000
O3 0.002 -1.392 0.000
H4 0.923 1.815 0.000
H5 -0.517 -1.684 0.764
H6 -0.517 -1.684 -0.764

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97701.93711.52832.42832.4283
O20.97702.90990.96793.33223.3322
O31.93712.90993.33700.96920.9692
H41.52830.96793.33703.86033.8603
H52.42833.33220.96923.86031.5288
H62.42833.33220.96923.86031.5288

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 103.587 H1 O3 H5 108.717
H1 O3 H6 108.717 O2 H1 O3 173.517
H5 O3 H6 104.133
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP_cp_opt/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.772      
4 H 0.000      
5 H 0.386      
6 H 0.386      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.194 -2.943 0.000 2.949
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -5.920 3.258 0.000
y 3.258 -3.953 0.000
z 0.000 0.000 -4.264
Traceless
 xyz
x -1.811 3.258 0.000
y 3.258 1.139 0.000
z 0.000 0.000 0.672
Polar
3z2-r21.345
x2-y2-1.967
xy3.258
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.709 0.163 0.000
y 0.163 0.510 0.000
z 0.000 0.000 1.100


<r2> (average value of r2) Å2
<r2> 52.981
(<r2>)1/2 7.279