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

using model chemistry: B3LYP_cp_opt/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_opt/6-31+G**
 hartrees
Energy at 0K-76.434042
Energy at 298.15K-76.436799
HF Energy-76.434042
Nuclear repulsion energy9.109123
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/6-31+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' 3899 3760 93.09      
2 A' 3806 3670 13.57      
3 A' 3702 3569 311.81      
4 A' 1629 1571 55.95      
5 A' 1611 1554 115.91      
6 A' 371 357 81.43      
7 A' 188 182 204.58      
8 A' 146 141 181.78      
9 A" 3924 3783 81.66      
10 A" 637 614 162.67      
11 A" 156 151 167.97      
12 A" 121 116 57.77      

Unscaled Zero Point Vibrational Energy (zpe) 10094.4 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 9733.0 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/6-31+G**
ABC
7.19988 0.21075 0.21059

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.101 0.560 0.000
O2 -0.001 1.528 0.000
O3 -0.001 -1.404 0.000
H4 0.893 1.889 0.000
H5 -0.488 -1.720 0.772
H6 -0.488 -1.720 -0.772

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97281.96661.54692.47812.4781
O20.97282.93140.96413.37323.3732
O31.96662.93143.41210.96580.9658
H41.54690.96413.41213.94043.9404
H52.47813.37320.96583.94041.5443
H62.47813.37320.96583.94041.5443

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 106.001 H1 O3 H5 110.664
H1 O3 H6 110.664 O2 H1 O3 170.998
H5 O3 H6 106.157
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.709      
4 H 0.000      
5 H 0.354      
6 H 0.354      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.023 -2.814 0.000 2.814
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.586 3.420 0.000
y 3.420 -3.993 0.000
z 0.000 0.000 -4.356
Traceless
 xyz
x -2.412 3.420 0.000
y 3.420 1.478 0.000
z 0.000 0.000 0.934
Polar
3z2-r21.868
x2-y2-2.593
xy3.420
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.979 -0.007 0.000
y -0.007 0.985 0.000
z 0.000 0.000 1.166


<r2> (average value of r2) Å2
<r2> 54.403
(<r2>)1/2 7.376