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

using model chemistry: HF/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-152.122918
Energy at 298.15K-152.125550
HF Energy-152.122918
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.212707
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/6-311+G(3df,2p)
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' 4231 3844 136.85      
2 A' 4141 3762 23.31      
3 A' 4102 3727 196.68      
4 A' 1769 1608 71.00      
5 A' 1750 1590 108.43      
6 A' 332 302 84.07      
7 A' 160 146 202.52      
8 A' 135 123 99.85      
9 A" 4241 3853 112.57      
10 A" 581 528 157.86      
11 A" 147 134 45.62      
12 A" 128 117 136.64      

Unscaled Zero Point Vibrational Energy (zpe) 10858.3 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 9865.8 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/6-311+G(3df,2p)
ABC
7.72728 0.19755 0.19730

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.058 0.639 0.000
O2 -0.004 1.582 0.000
O3 -0.004 -1.448 0.000
H4 0.878 1.905 0.000
H5 -0.438 -1.805 0.754
H6 -0.438 -1.805 -0.754

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.94402.08871.50792.60612.6061
O20.94403.02980.93913.49683.4968
O32.08873.02983.46740.94060.9406
H41.50790.93913.46744.00844.0084
H52.60613.49680.94064.00841.5082
H62.60613.49680.94064.00841.5082

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 106.403 H1 O3 H5 113.143
H1 O3 H6 113.143 O2 H1 O3 174.547
H5 O3 H6 106.586
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.383      
2 O -0.586      
3 O -0.445      
4 H 0.213      
5 H 0.218      
6 H 0.218      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.089 -2.761 0.000 2.762
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.852 6.482 0.000
y 6.482 -11.450 0.000
z 0.000 0.000 -11.695
Traceless
 xyz
x -0.280 6.482 0.000
y 6.482 0.324 0.000
z 0.000 0.000 -0.044
Polar
3z2-r2-0.088
x2-y2-0.402
xy6.482
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.135 0.128 0.000
y 0.128 2.478 0.000
z 0.000 0.000 2.200


<r2> (average value of r2) Å2
<r2> 56.928
(<r2>)1/2 7.545