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

using model chemistry: B3LYP/aug-cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-152.939678
Energy at 298.15K-152.942476
HF Energy-152.939678
Counterpoise corrected energy-76.466194
CP Energy at 298.15K-76.468971
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.506774
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-pVTZ
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' 3871 3745 85.59      
2 A' 3792 3668 10.39      
3 A' 3676 3557 334.26      
4 A' 1647 1593 38.50      
5 A' 1628 1575 92.16      
6 A' 363 352 52.19      
7 A' 189 183 215.78      
8 A' 159 154 63.17      
9 A" 3891 3764 84.36      
10 A" 626 606 94.48      
11 A" 159 154 14.03      
12 A" 130 126 152.34      

Unscaled Zero Point Vibrational Energy (zpe) 10065.1 cm-1
Scaled (by 0.9675) Zero Point Vibrational Energy (zpe) 9737.9 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-pVTZ
ABC
7.22981 0.21288 0.21279

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.171 0.537 0.000
O2 0.004 1.494 0.000
O3 0.004 -1.406 0.000
H4 0.875 1.903 0.000
H5 -0.559 -1.574 0.765
H6 -0.559 -1.574 -0.765

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97141.95001.53662.36142.3614
O20.97142.89980.96183.21213.2121
O31.95002.89983.42140.96490.9649
H41.53660.96183.42143.83843.8384
H52.36143.21210.96493.83841.5299
H62.36143.21210.96493.83841.5299

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 105.283 H1 O3 H5 102.945
H1 O3 H6 102.945 O2 H1 O3 165.206
H5 O3 H6 104.894
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.263      
2 O -0.417      
3 O -0.356      
4 H 0.152      
5 H 0.179      
6 H 0.179      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.054 -2.632 0.000 2.632
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.189 6.161 0.000
y 6.161 -12.474 0.000
z 0.000 0.000 -12.217
Traceless
 xyz
x 0.157 6.161 0.000
y 6.161 -0.271 0.000
z 0.000 0.000 0.114
Polar
3z2-r20.228
x2-y20.285
xy6.161
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.778 0.153 0.000
y 0.153 3.296 0.000
z 0.000 0.000 2.817


<r2> (average value of r2) Å2
<r2> 53.900
(<r2>)1/2 7.342