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

using model chemistry: PBEPBE_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 PBEPBE_cp_opt/6-31+G**
 hartrees
Energy at 0K-76.348609
Energy at 298.15K-76.351421
HF Energy-76.348609
Nuclear repulsion energy9.039063
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/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' 3801 3758 74.60      
2 A' 3707 3665 10.45      
3 A' 3561 3521 370.04      
4 A' 1595 1577 40.97      
5 A' 1579 1561 110.44      
6 A' 392 387 58.34      
7 A' 200 198 251.63      
8 A' 155 153 146.65      
9 A" 3827 3784 71.09      
10 A" 654 647 136.36      
11 A" 151 149 179.56      
12 A" 122 121 47.81      

Unscaled Zero Point Vibrational Energy (zpe) 9872.1 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 9759.5 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 PBEPBE_cp_opt/6-31+G**
ABC
6.90741 0.21494 0.21486

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.128 0.535 0.000
O2 0.002 1.509 0.000
O3 0.002 -1.398 0.000
H4 0.900 1.882 0.000
H5 -0.531 -1.654 0.774
H6 -0.531 -1.654 -0.774

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.98291.93701.55262.41272.4127
O20.98292.90760.97173.29953.2995
O31.93702.90763.40090.97350.9735
H41.55260.97173.40093.89183.8918
H52.41273.29950.97353.89181.5472
H62.41273.29950.97353.89181.5472

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 105.183 H1 O3 H5 107.303
H1 O3 H6 107.303 O2 H1 O3 168.886
H5 O3 H6 105.243
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.705      
4 H 0.000      
5 H 0.353      
6 H 0.353      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.098 -2.585 0.000 2.587
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.436 3.479 0.000
y 3.479 -5.001 0.000
z 0.000 0.000 -4.438
Traceless
 xyz
x -1.716 3.479 0.000
y 3.479 0.437 0.000
z 0.000 0.000 1.280
Polar
3z2-r22.560
x2-y2-1.435
xy3.479
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.031 -0.020 0.000
y -0.020 1.063 0.000
z 0.000 0.000 1.196


<r2> (average value of r2) Å2
<r2> 53.630
(<r2>)1/2 7.323