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

using model chemistry: CCSD(T)/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)/6-31+G**
 hartrees
Energy at 0K-152.498757
Energy at 298.15K-152.501630
HF Energy-152.068614
Counterpoise corrected energy-76.030309
CP Energy at 298.15K-76.032874
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.406741
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 CCSD(T)/6-31+G**
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' 3959 3799        
2 A' 3857 3702        
3 A' 3803 3650        
4 A' 1674 1607        
5 A' 1651 1584        
6 A' 374 359        
7 A' 198 190        
8 A' 168 161        
9 A" 3983 3822        
10 A" 664 637        
11 A" 166 159        
12 A" 141 135        

Unscaled Zero Point Vibrational Energy (zpe) 10318.4 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 9901.6 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 CCSD(T)/6-31+G**
ABC
7.41451 0.21114 0.21086

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.046 0.567 0.000
O2 -0.005 1.534 0.000
O3 -0.005 -1.390 0.000
H4 0.908 1.839 0.000
H5 -0.439 -1.778 0.768
H6 -0.439 -1.778 -0.768

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96841.95771.53632.51522.5152
O20.96842.92420.96263.42803.4280
O31.95772.92423.35530.96400.9640
H41.53630.96263.35533.93553.9355
H52.51523.42800.96403.93551.5360
H62.51523.42800.96403.93551.5360

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 105.421 H1 O3 H5 114.486
H1 O3 H6 114.486 O2 H1 O3 175.489
H5 O3 H6 105.626
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability