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

using model chemistry: B3LYP/6-311+G(3df,2pd)

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/6-311+G(3df,2pd)
 hartrees
Energy at 0K-152.935995
Energy at 298.15K-152.938831
HF Energy-152.935995
Counterpoise corrected energy-76.464151
CP Energy at 298.15K-76.466905
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.531826
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/6-311+G(3df,2pd)
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 3914 3774 85.94      
2 A 3898 3758 86.27      
3 A 3817 3681 13.91      
4 A 3708 3575 335.28      
5 A 1651 1592 40.90      
6 A 1629 1571 93.29      
7 A 641 618 111.86      
8 A 379 365 54.51      
9 A 192 185 216.82      
10 A 162 157 30.72      
11 A 162 156 74.00      
12 A 135 130 146.06      

Unscaled Zero Point Vibrational Energy (zpe) 10143.6 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 9780.4 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 B3LYP/6-311+G(3df,2pd)
ABC
7.19815 0.21304 0.21299

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2pd)

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.561 0.000 0.045
O2 1.516 0.000 -0.121
O3 -1.393 -0.000 0.112
H4 1.926 -0.000 0.747
H5 -1.737 0.765 -0.359
H6 -1.737 -0.765 -0.359

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96871.95501.53462.45552.4555
O20.96872.91750.95983.34963.3496
O31.95502.91753.37920.96170.9617
H41.53460.95983.37923.90193.9019
H52.45553.34960.96173.90191.5302
H62.45553.34960.96173.90191.5302

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 105.452 H1 O3 H5 109.939
H1 O3 H6 109.940 O2 H1 O3 172.058
H5 O3 H6 105.417
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.316      
2 O -0.479      
3 O -0.358      
4 H 0.170      
5 H 0.176      
6 H 0.176      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.132 -2.619 0.000 2.622
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.595 0.000 6.291
y 0.000 -12.182 0.000
z 6.291 0.000 -13.105
Traceless
 xyz
x 1.048 0.000 6.291
y 0.000 0.168 0.000
z 6.291 0.000 -1.216
Polar
3z2-r2-2.433
x2-y20.586
xy0.000
xz6.291
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.052 0.000 0.096
y 0.000 2.550 0.000
z 0.096 0.000 2.435


<r2> (average value of r2) Å2
<r2> 53.909
(<r2>)1/2 7.342