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

using model chemistry: PBEPBE/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 PBEPBE/6-311+G(3df,2pd)
 hartrees
Energy at 0K-152.764807
Energy at 298.15K-152.767682
Counterpoise corrected energy-76.378106
CP Energy at 298.15K-76.380861
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.550013
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 PBEPBE/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 3798 3760 66.70      
2 A 3715 3678 10.14      
3 A 3563 3527 387.30      
4 A 1616 1600 30.68      
5 A 1594 1578 86.49      
6 A 396 392 38.48      
7 A 198 196 211.44      
8 A 165 163 77.79      
9 A 3814 3776 73.34      
10 A 660 654 94.54      
11 A 163 161 0.63      
12 A 133 132 170.28      

Unscaled Zero Point Vibrational Energy (zpe) 9907.1 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 9808.0 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 PBEPBE/6-311+G(3df,2pd)
ABC
6.91190 0.21680 0.21662

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.109 0.532 0.000
O2 0.003 1.506 0.000
O3 0.003 -1.392 0.000
H4 0.908 1.849 0.000
H5 -0.534 -1.645 0.767
H6 -0.534 -1.645 -0.767
X7 1.014 0.875 0.000
X8 -1.071 -1.898 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6 X7 X8
H10.97931.92681.54042.39582.39580.96792.7008
O20.97932.89740.96793.28653.28651.19123.5685
O31.92682.89743.36480.97000.97002.48231.1869
H41.54040.96793.36483.85663.85660.97934.2369
H52.39583.28650.97003.85661.53463.05530.9700
H62.39583.28650.97003.85661.53463.05530.9700
X70.96791.19122.48230.97933.05533.05533.4691
X82.70083.56851.18694.23690.97000.97003.4691

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 104.575 H1 O3 H5 106.898
H1 O3 H6 106.898 O2 H1 O3 170.650
H5 O3 H6 104.560
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.308      
2 O -0.455      
3 O -0.321      
4 H 0.151      
5 H 0.158      
6 H 0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.189 -2.456 0.000 2.463
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.072 6.338 0.000
y 6.338 -12.694 0.000
z 0.000 0.000 -12.182
Traceless
 xyz
x 0.366 6.338 0.000
y 6.338 -0.567 0.000
z 0.000 0.000 0.201
Polar
3z2-r20.403
x2-y20.622
xy6.338
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.581 0.148 0.000
y 0.148 3.278 0.000
z 0.000 0.000 2.699


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000