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

using model chemistry: HF_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 HF_cp_opt/6-31+G**
 hartrees
Energy at 0K-76.031227
Energy at 298.15K-76.033797
HF Energy-76.031227
Nuclear repulsion energy9.318978
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/6-31+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' 4247 3840 144.50      
2 A' 4143 3747 28.83      
3 A' 4103 3710 192.47      
4 A' 1755 1587 101.04      
5 A' 1738 1571 129.14      
6 A' 324 293 142.76      
7 A' 159 144 135.75      
8 A' 126 114 222.39      
9 A" 4263 3854 117.67      
10 A" 579 524 233.31      
11 A" 149 135 172.26      
12 A" 111 101 41.36      

Unscaled Zero Point Vibrational Energy (zpe) 10848.1 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 9808.9 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/6-31+G**
ABC
7.88908 0.19517 0.19473

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.042 0.647 0.000
O2 -0.008 1.593 0.000
O3 -0.008 -1.450 0.000
H4 0.877 1.917 0.000
H5 -0.393 -1.855 0.761
H6 -0.393 -1.855 -0.761

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.94752.09821.52002.65122.6512
O20.94753.04380.94243.55223.5522
O32.09823.04383.48210.94380.9438
H41.52000.94243.48214.05244.0524
H52.65123.55220.94384.05241.5214
H62.65123.55220.94384.05241.5214

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 107.079 H1 O3 H5 115.991
H1 O3 H6 115.991 O2 H1 O3 175.604
H5 O3 H6 107.421
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.734      
4 H 0.000      
5 H 0.367      
6 H 0.367      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.307 -3.185 0.000 3.199
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.738 3.115 0.000
y 3.115 -1.996 0.000
z 0.000 0.000 -4.117
Traceless
 xyz
x -3.682 3.115 0.000
y 3.115 3.432 0.000
z 0.000 0.000 0.250
Polar
3z2-r20.501
x2-y2-4.742
xy3.115
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.804 0.029 0.000
y 0.029 0.807 0.000
z 0.000 0.000 1.052


<r2> (average value of r2) Å2
<r2> 57.573
(<r2>)1/2 7.588