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

using model chemistry: B3PW91/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 B3PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-152.878470
Energy at 298.15K-152.881284
HF Energy-152.878470
Nuclear repulsion energy36.602099
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 B3PW91/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' 3904 3767 81.22      
2 A' 3823 3690 10.84      
3 A' 3691 3563 346.65      
4 A' 1650 1592 38.35      
5 A' 1630 1573 91.16      
6 A' 372 359 48.27      
7 A' 190 183 236.41      
8 A' 156 151 47.90      
9 A" 3925 3788 84.08      
10 A" 637 614 93.63      
11 A" 164 158 5.79      
12 A" 128 124 161.57      

Unscaled Zero Point Vibrational Energy (zpe) 10134.3 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 9780.6 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 B3PW91/aug-cc-pVTZ
ABC
7.19111 0.21430 0.21428

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.090 0.552 0.000
O2 0.000 1.516 0.000
O3 0.000 -1.393 0.000
H4 0.899 1.851 0.000
H5 -0.498 -1.695 0.764
H6 -0.498 -1.695 -0.764

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96881.94671.53092.44492.4449
O20.96882.90930.95913.33853.3385
O31.94672.90933.36650.96080.9608
H41.53090.95913.36653.88763.8876
H52.44493.33850.96083.88761.5272
H62.44493.33850.96083.88761.5272

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 105.135 H1 O3 H5 109.762
H1 O3 H6 109.762 O2 H1 O3 172.056
H5 O3 H6 105.265
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.272      
2 O -0.417      
3 O -0.349      
4 H 0.149      
5 H 0.173      
6 H 0.173      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.088 -2.587 0.000 2.588
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.954 6.164 0.000
y 6.164 -12.508 0.000
z 0.000 0.000 -12.058
Traceless
 xyz
x 0.329 6.164 0.000
y 6.164 -0.502 0.000
z 0.000 0.000 0.173
Polar
3z2-r20.346
x2-y20.554
xy6.164
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.731 0.148 0.000
y 0.148 3.235 0.000
z 0.000 0.000 2.763


<r2> (average value of r2) Å2
<r2> 53.479
(<r2>)1/2 7.313