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

using model chemistry: HF/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 HF/TZVP
 hartrees
Energy at 0K-152.121260
Energy at 298.15K-152.123924
HF Energy-152.121260
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.363528
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/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' 4201 3817 109.84      
2 A' 4117 3741 25.42      
3 A' 4070 3698 204.57      
4 A' 1751 1591 85.14      
5 A' 1733 1575 97.29      
6 A' 326 296 167.30      
7 A' 166 151 93.35      
8 A' 147 134 203.31      
9 A" 4219 3834 103.33      
10 A" 603 548 233.33      
11 A" 150 136 128.98      
12 A" 125 113 59.23      

Unscaled Zero Point Vibrational Energy (zpe) 10803.7 cm-1
Scaled (by 0.9086) Zero Point Vibrational Energy (zpe) 9816.3 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/TZVP
ABC
8.06491 0.20180 0.20127

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.169 0.557 0.000
O2 0.004 1.491 0.000
O3 0.004 -1.404 0.000
H4 0.851 1.899 0.000
H5 -0.541 -1.576 0.752
H6 -0.541 -1.576 -0.752

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.94841.96721.50592.37002.3700
O20.94842.89410.94103.20383.2038
O31.96722.89413.40980.94430.9443
H41.50590.94103.40983.81833.8183
H52.37003.20380.94433.81831.5032
H62.37003.20380.94433.81831.5032

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 105.698 H1 O3 H5 103.309
H1 O3 H6 103.309 O2 H1 O3 165.140
H5 O3 H6 105.484
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.306      
2 O -0.585      
3 O -0.585      
4 H 0.270      
5 H 0.297      
6 H 0.297      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.415 -3.469 0.000 3.493
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -12.049 6.270 0.000
y 6.270 -10.438 0.000
z 0.000 0.000 -11.498
Traceless
 xyz
x -1.081 6.270 0.000
y 6.270 1.335 0.000
z 0.000 0.000 -0.254
Polar
3z2-r2-0.509
x2-y2-1.611
xy6.270
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.612 0.216 0.000
y 0.216 1.978 0.000
z 0.000 0.000 1.689


<r2> (average value of r2) Å2
<r2> 55.884
(<r2>)1/2 7.476