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

using model chemistry: B3LYP/cc-pVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYP/cc-pVQZ
 hartrees
Energy at 0K-152.947775
Energy at 298.15K-152.950572
HF Energy-152.947775
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.612953
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 B3LYP/cc-pVQZ
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' 3878 3757 74.36      
2 A' 3799 3680 10.43      
3 A' 3693 3578 310.86      
4 A' 1656 1604 44.36      
5 A' 1635 1584 88.87      
6 A' 379 367 51.48      
7 A' 187 181 148.89      
8 A' 163 157 147.37      
9 A" 3896 3774 77.00      
10 A" 637 617 103.72      
11 A" 149 144 42.62      
12 A" 127 123 133.09      

Unscaled Zero Point Vibrational Energy (zpe) 10098.1 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 9783.0 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 B3LYP/cc-pVQZ
ABC
7.06453 0.21450 0.21442

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.054 0.564 0.000
O2 0.007 1.528 0.000
O3 0.007 -1.416 0.000
H4 0.919 1.826 0.000
H5 -0.543 -1.641 0.757
H6 -0.543 -1.641 -0.757

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96501.98011.53012.40642.4064
O20.96502.94350.95933.30413.3041
O31.98012.94353.36740.96270.9627
H41.53010.95933.36743.83793.8379
H52.40643.30410.96273.83791.5144
H62.40643.30410.96273.83791.5144

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 105.338 H1 O3 H5 104.324
H1 O3 H6 104.324 O2 H1 O3 175.882
H5 O3 H6 103.735
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.271      
2 O -0.547      
3 O -0.474      
4 H 0.237      
5 H 0.257      
6 H 0.257      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.135 -2.541 0.000 2.544
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.697 6.222 0.000
y 6.222 -12.822 0.000
z 0.000 0.000 -11.865
Traceless
 xyz
x 0.647 6.222 0.000
y 6.222 -1.041 0.000
z 0.000 0.000 0.394
Polar
3z2-r20.788
x2-y21.125
xy6.222
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.369 0.226 0.000
y 0.226 2.881 0.000
z 0.000 0.000 2.292


<r2> (average value of r2) Å2
<r2> 53.336
(<r2>)1/2 7.303