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

using model chemistry: B3LYPultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-152.830148
Energy at 298.15K 
HF Energy-152.830148
Counterpoise corrected energy-152.827105
CP Energy at 298.15K-152.830035
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.958537
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 B3LYPultrafine/6-31G*
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' 3812 3652 49.11      
2 A' 3720 3563 10.11      
3 A' 3622 3470 251.44      
4 A' 1740 1667 85.10      
5 A' 1710 1638 63.24      
6 A' 465 446 23.08      
7 A' 234 224 179.87      
8 A' 132 126 266.19      
9 A" 3834 3673 45.66      
10 A" 686 658 122.16      
11 A" 174 166 202.89      
12 A" 62i 59i 25.48      

Unscaled Zero Point Vibrational Energy (zpe) 10033.6 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 9612.2 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 B3LYPultrafine/6-31G*
ABC
6.66558 0.22553 0.22500

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.079 0.544 0.000
O2 0.007 1.515 0.000
O3 0.007 -1.408 0.000
H4 0.927 1.816 0.000
H5 -0.562 -1.607 0.762
H6 -0.562 -1.607 -0.762

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97421.95341.52902.36962.3696
O20.97422.92370.96783.26343.2634
O31.95342.92373.35320.97130.9713
H41.52900.96783.35323.80943.8094
H52.36963.26340.97133.80941.5239
H62.36963.26340.97133.80941.5239

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 103.875 H1 O3 H5 103.029
H1 O3 H6 103.029 O2 H1 O3 173.649
H5 O3 H6 103.342
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.396      
2 O -0.835      
3 O -0.755      
4 H 0.376      
5 H 0.409      
6 H 0.409      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.315 -1.690 0.000 1.719
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.778 6.368 0.000
y 6.368 -14.188 0.000
z 0.000 0.000 -11.411
Traceless
 xyz
x 2.022 6.368 0.000
y 6.368 -3.093 0.000
z 0.000 0.000 1.072
Polar
3z2-r22.144
x2-y23.410
xy6.368
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.642 0.313 0.000
y 0.313 1.981 0.000
z 0.000 0.000 1.457


<r2> (average value of r2) Å2
<r2> 50.876
(<r2>)1/2 7.133