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

using model chemistry: PBEPBE/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/cc-pVDZ
 hartrees
Energy at 0K-152.684530
Energy at 298.15K-152.687943
HF Energy-152.684530
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy37.895607
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 PBEPBE/cc-pVDZ
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 3710 3688 0.32      
2 A 3707 3686 85.47      
3 A 3574 3553 138.70      
4 A 3535 3514 0.01      
5 A 1652 1642 85.07      
6 A 1622 1612 0.00      
7 A 828 823 0.00      
8 A 396 394 301.26      
9 A 358 356 0.01      
10 A 227 226 0.02      
11 A 209 208 461.37      
12 A 197 196 40.91      

Unscaled Zero Point Vibrational Energy (zpe) 10007.1 cm-1
Scaled (by 0.9942) Zero Point Vibrational Energy (zpe) 9949.1 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 PBEPBE/cc-pVDZ
ABC
6.86210 0.25078 0.24773

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 -0.500 -0.071 -0.237
O2 -1.426 0.112 0.054
O3 1.378 -0.102 -0.079
H4 -1.903 -0.672 -0.281
H5 1.541 0.858 -0.174
H6 1.245 -0.190 0.887

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.98801.88511.52732.24332.0795
O20.98802.81580.97663.06842.8147
O31.88512.81583.33660.97890.9793
H41.52730.97663.33663.77033.3927
H52.24333.06840.97893.77031.5214
H62.07952.81470.97933.39271.5214

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 102.042 H1 O3 H5 98.111
H1 O3 H6 87.079 O2 H1 O3 155.856
H5 O3 H6 101.963
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.115      
2 O -0.254      
3 O -0.254      
4 H 0.139      
5 H 0.139      
6 H 0.115      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.002 0.001 -0.001 0.002
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.112 5.610 1.253
y 5.610 -11.139 -0.102
z 1.253 -0.102 -12.610
Traceless
 xyz
x -2.238 5.610 1.253
y 5.610 2.222 -0.102
z 1.253 -0.102 0.016
Polar
3z2-r20.031
x2-y2-2.974
xy5.610
xz1.253
yz-0.102


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.564 0.361 -0.014
y 0.361 1.797 -0.007
z -0.014 -0.007 1.567


<r2> (average value of r2) Å2
<r2> 46.642
(<r2>)1/2 6.829