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

using model chemistry: PBEPBE/TZVP

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/TZVP
 hartrees
Energy at 0K-152.759119
Energy at 298.15K-152.761914
HF Energy-152.759119
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.596116
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/TZVP
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' 3772 3730 48.16      
2 A' 3693 3652 9.07      
3 A' 3536 3496 346.14      
4 A' 1591 1574 31.02      
5 A' 1572 1555 82.37      
6 A' 386 381 80.71      
7 A' 199 197 49.85      
8 A' 151 149 262.94      
9 A" 3802 3759 59.50      
10 A" 662 655 148.41      
11 A" 140 139 187.22      
12 A" 123 122 9.29      

Unscaled Zero Point Vibrational Energy (zpe) 9813.7 cm-1
Scaled (by 0.9888) Zero Point Vibrational Energy (zpe) 9703.8 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/TZVP
ABC
7.01962 0.21846 0.21843

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.157 0.540 0.000
O2 0.005 1.508 0.000
O3 0.005 -1.414 0.000
H4 0.895 1.893 0.000
H5 -0.566 -1.590 0.769
H6 -0.566 -1.590 -0.769

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97971.96001.54172.37652.3765
O20.97972.92190.96993.24193.2419
O31.96002.92193.42530.97320.9732
H41.54170.96993.42533.85433.8543
H52.37653.24190.97323.85431.5374
H62.37653.24190.97323.85431.5374

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 104.513 H1 O3 H5 103.011
H1 O3 H6 103.011 O2 H1 O3 166.626
H5 O3 H6 104.339
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.257      
2 O -0.549      
3 O -0.529      
4 H 0.253      
5 H 0.284      
6 H 0.284      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.096 -2.967 0.000 2.968
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.853 6.655 0.000
y 6.655 -12.648 0.000
z 0.000 0.000 -11.973
Traceless
 xyz
x 0.458 6.655 0.000
y 6.655 -0.735 0.000
z 0.000 0.000 0.277
Polar
3z2-r20.554
x2-y20.795
xy6.655
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.974 0.306 0.000
y 0.306 2.548 0.000
z 0.000 0.000 1.941


<r2> (average value of r2) Å2
<r2> 52.672
(<r2>)1/2 7.258