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

using model chemistry: HF/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/cc-pVQZ
 hartrees
Energy at 0K-152.137422
Energy at 298.15K-152.139961
HF Energy-152.137422
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.191968
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 HF/cc-pVQZ
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' 4209 3823 126.70      
2 A' 4125 3747 20.39      
3 A' 4085 3711 186.82      
4 A' 1772 1609 76.37      
5 A' 1753 1592 102.15      
6 A' 313 284 101.61      
7 A' 151 137 131.49      
8 A' 132 120 146.58      
9 A" 4222 3835 108.27      
10 A" 561 510 161.90      
11 A" 133 121 105.17      
12 A" 119 108 66.64      

Unscaled Zero Point Vibrational Energy (zpe) 10786.7 cm-1
Scaled (by 0.9084) Zero Point Vibrational Energy (zpe) 9798.6 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 HF/cc-pVQZ
ABC
7.87988 0.19698 0.19664

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.168 0.559 0.000
O2 0.004 1.491 0.000
O3 0.004 -1.405 0.000
H4 0.851 1.896 0.000
H5 -0.542 -1.572 0.748
H6 -0.542 -1.572 -0.748

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.94611.97081.50122.36792.3679
O20.94612.89580.93863.20013.2001
O31.97082.89583.40780.94170.9417
H41.50120.93863.40783.81173.8117
H52.36793.20010.94173.81171.4969
H62.36793.20010.94173.81171.4969

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 105.597 H1 O3 H5 103.015
H1 O3 H6 103.015 O2 H1 O3 165.248
H5 O3 H6 105.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.295      
2 O -0.560      
3 O -0.502      
4 H 0.248      
5 H 0.260      
6 H 0.260      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.198 -2.970 0.000 2.976
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.826 6.194 0.000
y 6.194 -10.933 0.000
z 0.000 0.000 -11.506
Traceless
 xyz
x -0.607 6.194 0.000
y 6.194 0.733 0.000
z 0.000 0.000 -0.126
Polar
3z2-r2-0.253
x2-y2-0.894
xy6.194
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.059 0.172 0.000
y 0.172 2.426 0.000
z 0.000 0.000 2.062


<r2> (average value of r2) Å2
<r2> 56.977
(<r2>)1/2 7.548