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

using model chemistry: QCISD(TQ)/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD(TQ)/cc-pVDZ
 hartrees
Energy at 0K-152.495043
Energy at 298.15K-152.497812
HF Energy-152.061058
Nuclear repulsion energy36.523530
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 QCISD(TQ)/cc-pVDZ
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' 3897 3897        
2 A' 3808 3808        
3 A' 3776 3776        
4 A' 1723 1723        
5 A' 1685 1685        
6 A' 396 396        
7 A' 191 191        
8 A' 153 153        
9 A" 3910 3910        
10 A" 649 649        
11 A" 174 174        
12 A" 78 78        

Unscaled Zero Point Vibrational Energy (zpe) 10220.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 10220.2 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 QCISD(TQ)/cc-pVDZ
ABC
6.67975 0.21468 0.21405

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(TQ)/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.091 0.548 0.000
O2 0.008 1.516 0.000
O3 0.008 -1.411 0.000
H4 0.932 1.795 0.000
H5 -0.572 -1.591 0.754
H6 -0.572 -1.591 -0.754

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97101.96081.50362.36352.3635
O20.97102.92640.96603.24913.2491
O31.96082.92643.33620.96830.9683
H41.50360.96603.33623.78113.7811
H52.36353.24910.96833.78111.5085
H62.36353.24910.96833.78111.5085

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 101.842 H1 O3 H5 102.219
H1 O3 H6 102.219 O2 H1 O3 172.607
H5 O3 H6 102.322
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability