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

using model chemistry: HF_cp/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 HF_cp/aug-cc-pVTZ
 hartrees
Energy at 0K-152.128228
Energy at 298.15K-152.121000
Nuclear repulsion energy 
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/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' 4201 3825 133.95      
2 A' 4116 3747 20.79      
3 A' 4072 3707 190.75      
4 A' 1765 1607 74.70      
5 A' 1749 1592 104.12      
6 A' 309 282 95.47      
7 A' 151 138 200.03      
8 A' 130 119 76.64      
9 A" 4215 3837 112.27      
10 A" 554 505 152.37      
11 A" 138 126 92.49      
12 A" 113 103 76.64      

Unscaled Zero Point Vibrational Energy (zpe) 10756.8 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 9793.0 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/aug-cc-pVTZ
ABC
7.93289 0.19574 0.19535

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.169 0.558 0.000
O2 0.004 1.492 0.000
O3 0.004 -1.406 0.000
H4 0.851 1.900 0.000
H5 -0.542 -1.574 0.750
H6 -0.542 -1.574 -0.750

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.94781.97101.50552.36972.3697
O20.94782.89760.94003.20333.2033
O31.97102.89763.41290.94310.9431
H41.50550.94003.41293.81783.8178
H52.36973.20330.94313.81781.5001
H62.36973.20330.94313.81781.5001

picture of water dimer state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 H 0.301      
2 O -0.468      
3 O -0.423      
4 H 0.181      
5 H 0.205      
6 H 0.205      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.231 -2.937 0.000 2.946
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 57.402
(<r2>)1/2 7.576