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

using model chemistry: HF/daug-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 HF/daug-cc-pVTZ
 hartrees
Energy at 0K-152.128614
Energy at 298.15K-152.131144
HF Energy-152.128614
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.100070
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 HF/daug-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 4215 3813 111.97      
2 A 4201 3800 133.53      
3 A 4116 3724 20.47      
4 A 4073 3684 190.13      
5 A 1766 1598 74.94      
6 A 1749 1582 103.60      
7 A 557 504 151.46      
8 A 310 280 95.85      
9 A 152 137 193.74      
10 A 141 127 85.18      
11 A 131 119 81.98      
12 A 115 104 83.75      

Unscaled Zero Point Vibrational Energy (zpe) 10762.6 cm-1
Scaled (by 0.9046) Zero Point Vibrational Energy (zpe) 9735.9 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 HF/daug-cc-pVTZ
ABC
7.94925 0.19562 0.19522

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.651 0.003 -0.002
O2 1.589 -0.003 -0.115
O3 -1.445 0.002 0.088
H4 1.958 0.017 0.750
H5 -1.886 0.747 -0.281
H6 -1.876 -0.762 -0.254

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.94492.09701.50872.65832.6517
O20.94493.04000.94023.55873.5497
O32.09703.04003.46650.94150.9415
H41.50870.94023.46654.04654.0392
H52.65833.55870.94154.04651.5095
H62.65173.54970.94154.03921.5095

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 106.323 H1 O3 H5 116.835
H1 O3 H6 116.265 O2 H1 O3 175.645
H5 O3 H6 106.574
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.616      
2 O -0.693      
3 O -0.479      
4 H 0.133      
5 H 0.212      
6 H 0.211      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.929 0.010 0.437 2.961
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.007 0.122 6.017
y 0.122 -11.686 -0.009
z 6.017 -0.009 -12.892
Traceless
 xyz
x 2.282 0.122 6.017
y 0.122 -0.237 -0.009
z 6.017 -0.009 -2.045
Polar
3z2-r2-4.090
x2-y21.679
xy0.122
xz6.017
yz-0.009


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.691 0.001 0.098
y 0.001 2.392 -0.000
z 0.098 -0.000 2.341


<r2> (average value of r2) Å2
<r2> 57.432
(<r2>)1/2 7.578