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

using model chemistry: B3LYP_cp_opt/6-311+G(3df,2pd)

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/6-311+G(3df,2pd)
 hartrees
Energy at 0K-76.464151
Energy at 298.15K-76.466905
HF Energy-76.464151
Nuclear repulsion energy9.152413
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/6-311+G(3df,2pd)
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' 3897 3780 87.06      
2 A' 3821 3707 13.89      
3 A' 3713 3601 324.48      
4 A' 1648 1598 41.25      
5 A' 1628 1579 91.72      
6 A' 362 351 56.78      
7 A' 184 178 206.70      
8 A' 154 150 90.25      
9 A" 3918 3800 85.03      
10 A" 620 601 107.27      
11 A" 150 146 62.33      
12 A" 129 125 116.06      

Unscaled Zero Point Vibrational Energy (zpe) 10111.5 cm-1
Scaled (by 0.97) Zero Point Vibrational Energy (zpe) 9808.1 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 B3LYP_cp_opt/6-311+G(3df,2pd)
ABC
7.24971 0.21066 0.21057

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP_cp_opt/6-311+G(3df,2pd)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.088 0.565 0.000
O2 -0.001 1.530 0.000
O3 -0.001 -1.403 0.000
H4 0.897 1.869 0.000
H5 -0.487 -1.724 0.765
H6 -0.487 -1.724 -0.765

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96841.97071.53422.48112.4811
O20.96842.93290.95993.37723.3772
O31.97072.93293.39310.96140.9614
H41.53420.95993.39313.92523.9252
H52.48113.37720.96143.92521.5303
H62.48113.37720.96143.92521.5303

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 105.423 H1 O3 H5 110.835
H1 O3 H6 110.835 O2 H1 O3 172.144
H5 O3 H6 105.472
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP_cp_opt/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.355      
4 H 0.000      
5 H 0.178      
6 H 0.178      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.031 -2.659 0.000 2.659
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.575 3.038 0.000
y 3.038 -4.312 0.000
z 0.000 0.000 -4.430
Traceless
 xyz
x -2.204 3.038 0.000
y 3.038 1.190 0.000
z 0.000 0.000 1.014
Polar
3z2-r22.028
x2-y2-2.263
xy3.038
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.226 0.003 0.000
y 0.003 1.224 0.000
z 0.000 0.000 1.366


<r2> (average value of r2) Å2
<r2> 54.336
(<r2>)1/2 7.371