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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31+G**
 hartrees
Energy at 0K-152.708662
Energy at 298.15K-152.711660
HF Energy-152.708662
Nuclear repulsion energy36.873571
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 PBE1PBE/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' 3966 3789 96.47      
2 A' 3874 3701 18.02      
3 A' 3743 3576 369.31      
4 A' 1645 1571 50.02      
5 A' 1627 1554 125.80      
6 A' 403 385 97.85      
7 A' 213 203 170.99      
8 A' 175 167 159.27      
9 A" 3994 3815 97.18      
10 A" 704 672 174.80      
11 A" 185 177 32.07      
12 A" 150 143 185.77      

Unscaled Zero Point Vibrational Energy (zpe) 10338.6 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 9876.5 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 PBE1PBE/6-31+G**
ABC
7.32514 0.22098 0.22075

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.158 0.541 0.000
O2 0.004 1.499 0.000
O3 0.004 -1.408 0.000
H4 0.878 1.900 0.000
H5 -0.553 -1.584 0.767
H6 -0.553 -1.584 -0.767

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96981.95531.53762.36912.3691
O20.96982.90680.96103.22573.2257
O31.95532.90683.42140.96430.9643
H41.53760.96103.42143.84423.8442
H52.36913.22570.96433.84421.5331
H62.36913.22570.96433.84421.5331

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 105.562 H1 O3 H5 103.177
H1 O3 H6 103.177 O2 H1 O3 166.365
H5 O3 H6 105.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.428      
2 O -0.772      
3 O -0.769      
4 H 0.351      
5 H 0.382      
6 H 0.382      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.062 -3.019 0.000 3.020
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.111 6.854 0.000
y 6.854 -12.211 0.000
z 0.000 0.000 -12.091
Traceless
 xyz
x 0.040 6.854 0.000
y 6.854 -0.111 0.000
z 0.000 0.000 0.070
Polar
3z2-r20.141
x2-y20.101
xy6.854
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.985 0.151 0.000
y 0.151 2.570 0.000
z 0.000 0.000 2.098


<r2> (average value of r2) Å2
<r2> 52.243
(<r2>)1/2 7.228