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

using model chemistry: HF_cp_opt/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-76.061200
Energy at 298.15K-76.063733
HF Energy-76.061200
Nuclear repulsion energy9.342660
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/aug-cc-pVTZ
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' 4201 3823 135.54      
2 A' 4115 3745 20.66      
3 A' 4073 3706 187.03      
4 A' 1765 1606 74.54      
5 A' 1748 1591 104.40      
6 A' 309 281 94.71      
7 A' 151 137 187.34      
8 A' 129 118 90.95      
9 A" 4215 3835 112.09      
10 A" 553 504 151.75      
11 A" 140 128 89.33      
12 A" 116 106 80.59      

Unscaled Zero Point Vibrational Energy (zpe) 10757.6 cm-1
Scaled (by 0.91) Zero Point Vibrational Energy (zpe) 9789.4 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/aug-cc-pVTZ
ABC
7.91818 0.19521 0.19483

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF_cp_opt/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.044 0.650 0.000
O2 -0.008 1.594 0.000
O3 -0.008 -1.450 0.000
H4 0.878 1.908 0.000
H5 -0.398 -1.855 0.755
H6 -0.398 -1.855 -0.755

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.94502.10091.50912.65382.6538
O20.94503.04390.94033.55223.5522
O32.10093.04393.47270.94160.9416
H41.50910.94033.47274.04464.0446
H52.65383.55220.94164.04461.5099
H62.65383.55220.94164.04461.5099

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 106.342 H1 O3 H5 116.130
H1 O3 H6 116.130 O2 H1 O3 175.428
H5 O3 H6 106.602
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF_cp_opt/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.000      
2 O 0.000      
3 O -0.447      
4 H 0.000      
5 H 0.224      
6 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.222 -2.922 0.000 2.931
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -6.702 2.789 0.000
y 2.789 -2.622 0.000
z 0.000 0.000 -4.192
Traceless
 xyz
x -3.295 2.789 0.000
y 2.789 2.825 0.000
z 0.000 0.000 0.470
Polar
3z2-r20.941
x2-y2-4.080
xy2.789
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.171 0.037 0.000
y 0.037 1.173 0.000
z 0.000 0.000 1.318


<r2> (average value of r2) Å2
<r2> 57.532
(<r2>)1/2 7.585