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

using model chemistry: B3LYP/aug-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/aug-cc-pVQZ
 hartrees
Energy at 0K-152.951766
Energy at 298.15K-152.954504
HF Energy-152.951766
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.547837
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/aug-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' 3879 3758 86.04      
2 A' 3800 3682 10.64      
3 A' 3685 3571 330.79      
4 A' 1647 1596 36.57      
5 A' 1630 1579 93.88      
6 A' 361 350 48.94      
7 A' 183 177 123.16      
8 A' 151 147 163.74      
9 A" 3898 3777 84.80      
10 A" 628 608 94.28      
11 A" 151 146 47.28      
12 A" 119 115 119.73      

Unscaled Zero Point Vibrational Energy (zpe) 10065.1 cm-1
Scaled (by 0.9689) Zero Point Vibrational Energy (zpe) 9752.1 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/aug-cc-pVQZ
ABC
7.27919 0.21339 0.21326

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.107 0.556 0.000
O2 -0.001 1.518 0.000
O3 -0.001 -1.394 0.000
H4 0.889 1.877 0.000
H5 -0.488 -1.712 0.765
H6 -0.488 -1.712 -0.765

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96851.95321.53482.46672.4667
O20.96852.91260.95953.35553.3555
O31.95322.91263.39010.96130.9613
H41.53480.95953.39013.91963.9196
H52.46673.35550.96133.91961.5308
H62.46673.35550.96133.91961.5308

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 105.507 H1 O3 H5 111.000
H1 O3 H6 111.000 O2 H1 O3 170.378
H5 O3 H6 105.552
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.266      
2 O -0.606      
3 O -0.562      
4 H 0.298      
5 H 0.303      
6 H 0.303      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.039 -2.591 0.000 2.591
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.206 6.174 0.000
y 6.174 -12.335 0.000
z 0.000 0.000 -12.204
Traceless
 xyz
x 0.064 6.174 0.000
y 6.174 -0.130 0.000
z 0.000 0.000 0.066
Polar
3z2-r20.133
x2-y20.129
xy6.174
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.796 0.144 0.000
y 0.144 3.302 0.000
z 0.000 0.000 2.838


<r2> (average value of r2) Å2
<r2> 53.790
(<r2>)1/2 7.334