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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31+G**
 hartrees
Energy at 0K-152.877720
Energy at 298.15K-152.880680
HF Energy-152.877720
Counterpoise corrected energy-152.876420
CP Energy at 298.15K-152.879182
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.610449
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/6-31+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' 3897 3752 92.23      
2 A' 3808 3666 13.79      
3 A' 3692 3554 338.85      
4 A' 1634 1573 49.58      
5 A' 1617 1556 120.50      
6 A' 390 376 102.81      
7 A' 208 200 197.29      
8 A' 173 167 121.86      
9 A" 3923 3777 87.22      
10 A" 683 658 174.56      
11 A" 183 176 35.55      
12 A" 149 143 177.61      

Unscaled Zero Point Vibrational Energy (zpe) 10177.9 cm-1
Scaled (by 0.9627) Zero Point Vibrational Energy (zpe) 9798.2 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/6-31+G**
ABC
7.31566 0.21665 0.21638

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.152 0.544 0.000
O2 0.004 1.506 0.000
O3 0.004 -1.414 0.000
H4 0.883 1.907 0.000
H5 -0.553 -1.595 0.771
H6 -0.553 -1.595 -0.771

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97371.96331.54702.38072.3807
O20.97372.92030.96523.24453.2445
O31.96332.92033.43530.96850.9685
H41.54700.96523.43533.86323.8632
H52.38073.24450.96853.86321.5416
H62.38073.24450.96853.86321.5416

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 105.852 H1 O3 H5 103.302
H1 O3 H6 103.302 O2 H1 O3 167.013
H5 O3 H6 105.476
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.424      
2 O -0.763      
3 O -0.757      
4 H 0.345      
5 H 0.375      
6 H 0.375      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.097 -3.061 0.000 3.063
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.308 6.855 0.000
y 6.855 -12.215 0.000
z 0.000 0.000 -12.228
Traceless
 xyz
x -0.087 6.855 0.000
y 6.855 0.053 0.000
z 0.000 0.000 0.034
Polar
3z2-r20.068
x2-y2-0.093
xy6.855
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.044 0.152 0.000
y 0.152 2.660 0.000
z 0.000 0.000 2.163


<r2> (average value of r2) Å2
<r2> 53.209
(<r2>)1/2 7.294