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

using model chemistry: CCSD(T)=FULL/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 CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-152.619813
Energy at 298.15K-152.622588
HF Energy-152.119279
Nuclear repulsion energy36.500479
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)=FULL/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' 3915 3743        
2 A' 3832 3664        
3 A' 3774 3608        
4 A' 1666 1593        
5 A' 1637 1565        
6 A' 368 352        
7 A' 182 174        
8 A' 166 159        
9 A" 3938 3764        
10 A" 629 601        
11 A" 148 142        
12 A" 124 118        

Unscaled Zero Point Vibrational Energy (zpe) 10189.8 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 9741.4 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)=FULL/TZVP
ABC
7.50616 0.21238 0.21217

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.035 0.567 0.000
O2 -0.006 1.534 0.000
O3 -0.006 -1.381 0.000
H4 0.917 1.799 0.000
H5 -0.427 -1.796 0.759
H6 -0.427 -1.796 -0.759

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96711.94851.51532.52502.5250
O20.96712.91430.96093.44093.4409
O31.94852.91433.31140.96250.9625
H41.51530.96093.31143.91293.9129
H52.52503.44090.96253.91291.5184
H62.52503.44090.96253.91291.5184

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 103.616 H1 O3 H5 116.142
H1 O3 H6 116.142 O2 H1 O3 176.354
H5 O3 H6 104.154
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability