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

using model chemistry: PBEPBE_cp_opt/aug-cc-pVTZ

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_cp_opt/aug-cc-pVTZ
 hartrees
Energy at 0K-76.380337
Energy at 298.15K-76.383076
HF Energy-76.380337
Nuclear repulsion energy9.066644
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_cp_opt/aug-cc-pVTZ
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' 3771 3734 67.15      
2 A' 3694 3657 7.17      
3 A' 3536 3500 386.45      
4 A' 1611 1595 27.84      
5 A' 1591 1575 84.37      
6 A' 375 371 35.63      
7 A' 188 186 147.79      
8 A' 155 154 130.26      
9 A" 3794 3756 71.82      
10 A" 639 633 75.57      
11 A" 131 130 30.67      
12 A" 116 115 129.28      

Unscaled Zero Point Vibrational Energy (zpe) 9800.9 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 9702.9 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_cp_opt/aug-cc-pVTZ
ABC
6.92338 0.21629 0.21613

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE_cp_opt/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.104 0.533 0.000
O2 0.003 1.508 0.000
O3 0.003 -1.392 0.000
H4 0.911 1.846 0.000
H5 -0.529 -1.657 0.768
H6 -0.529 -1.657 -0.768

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.98041.92731.54132.40522.4052
O20.98042.89980.96923.29983.2998
O31.92732.89983.36280.97080.9708
H41.54130.96923.36283.86443.8644
H52.40523.29980.97083.86441.5351
H62.40523.29980.97083.86441.5351

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 104.478 H1 O3 H5 107.549
H1 O3 H6 107.549 O2 H1 O3 171.045
H5 O3 H6 104.498
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE_cp_opt/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.324      
4 H 0.000      
5 H 0.162      
6 H 0.162      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.166 -2.468 0.000 2.474
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.494 2.945 0.000
y 2.945 -5.314 0.000
z 0.000 0.000 -4.544
Traceless
 xyz
x -1.565 2.945 0.000
y 2.945 0.206 0.000
z 0.000 0.000 1.360
Polar
3z2-r22.719
x2-y2-1.181
xy2.945
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.533 0.011 0.000
y 0.011 1.517 0.000
z 0.000 0.000 1.600


<r2> (average value of r2) Å2
<r2> 53.312
(<r2>)1/2 7.302