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

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

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_cp_opt/6-311+G(3df,2pd)
 hartrees
Energy at 0K-76.059067
Energy at 298.15K-76.061576
HF Energy-76.059067
Nuclear repulsion energy9.351969
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_cp_opt/6-311+G(3df,2pd)
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' 4227 3847 135.86      
2 A' 4142 3769 24.04      
3 A' 4103 3733 188.85      
4 A' 1766 1607 75.52      
5 A' 1749 1592 103.35      
6 A' 308 281 99.25      
7 A' 148 135 183.51      
8 A' 128 116 103.85      
9 A" 4239 3858 113.82      
10 A" 551 502 161.49      
11 A" 139 126 107.24      
12 A" 113 103 68.35      

Unscaled Zero Point Vibrational Energy (zpe) 10806.4 cm-1
Scaled (by 0.91) Zero Point Vibrational Energy (zpe) 9833.8 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_cp_opt/6-311+G(3df,2pd)
ABC
7.92799 0.19396 0.19359

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.043 0.656 0.000
O2 -0.008 1.599 0.000
O3 -0.008 -1.455 0.000
H4 0.878 1.911 0.000
H5 -0.399 -1.859 0.754
H6 -0.399 -1.859 -0.754

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.94402.11211.50702.66332.6633
O20.94403.05410.93943.56123.5612
O32.11213.05413.48080.94070.9407
H41.50700.93943.48084.05164.0516
H52.66333.56120.94074.05161.5078
H62.66333.56120.94074.05161.5078

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 106.287 H1 O3 H5 116.091
H1 O3 H6 116.091 O2 H1 O3 175.498
H5 O3 H6 106.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.295      
4 H 0.000      
5 H 0.147      
6 H 0.147      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.230 -2.938 0.000 2.947
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.691 2.845 0.000
y 2.845 -2.534 0.000
z 0.000 0.000 -4.191
Traceless
 xyz
x -3.329 2.845 0.000
y 2.845 2.908 0.000
z 0.000 0.000 0.421
Polar
3z2-r20.842
x2-y2-4.158
xy2.845
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.051 0.023 0.000
y 0.023 1.052 0.000
z 0.000 0.000 1.221


<r2> (average value of r2) Å2
<r2> 57.826
(<r2>)1/2 7.604