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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-152.682244
Energy at 298.15K-152.684975
HF Energy-152.560388
Nuclear repulsion energy36.870882
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 B2PLYP/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' 3856 3660 65.85      
2 A' 3750 3559 12.41      
3 A' 3677 3490 233.15      
4 A' 1758 1668 86.84      
5 A' 1726 1639 72.85      
6 A' 454 431 27.63      
7 A' 228 216 168.85      
8 A' 133 126 274.94      
9 A" 3871 3675 53.32      
10 A" 681 646 137.62      
11 A" 167 158 204.55      
12 A" 26 25 26.82      

Unscaled Zero Point Vibrational Energy (zpe) 10162.8 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 9646.5 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 B2PLYP/6-31G*
ABC
6.69281 0.22294 0.22245

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.172 0.530 0.000
O2 0.005 1.490 0.000
O3 0.005 -1.401 0.000
H4 0.888 1.881 0.000
H5 -0.569 -1.559 0.765
H6 -0.569 -1.559 -0.765

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97391.93841.52922.34482.3448
O20.97392.89080.96623.19523.1952
O31.93842.89083.39880.96940.9694
H41.52920.96623.39883.81343.8134
H52.34483.19520.96943.81341.5304
H62.34483.19520.96943.81341.5304

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 104.029 H1 O3 H5 102.310
H1 O3 H6 102.310 O2 H1 O3 165.216
H5 O3 H6 104.251
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.415      
2 O -0.859      
3 O -0.783      
4 H 0.388      
5 H 0.420      
6 H 0.420      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.316 -1.844 0.000 1.871
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.797 6.586 0.000
y 6.586 -14.065 0.000
z 0.000 0.000 -11.440
Traceless
 xyz
x 1.955 6.586 0.000
y 6.586 -2.946 0.000
z 0.000 0.000 0.991
Polar
3z2-r21.982
x2-y23.268
xy6.586
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.611 0.306 0.000
y 0.306 1.905 0.000
z 0.000 0.000 1.440


<r2> (average value of r2) Å2
<r2> 51.395
(<r2>)1/2 7.169