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

using model chemistry: CCSD(T)/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 CCSD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-152.692966
Energy at 298.15K-152.695722
HF Energy-152.126140
Counterpoise corrected energy-152.126231
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.549307
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)/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' 3892 3775        
2 A' 3805 3691        
3 A' 3732 3619        
4 A' 1667 1617        
5 A' 1646 1597        
6 A' 359 348        
7 A' 184 179        
8 A' 155 150        
9 A" 3911 3793        
10 A" 622 603        
11 A" 143 139        
12 A" 132 128        

Unscaled Zero Point Vibrational Energy (zpe) 10124.0 cm-1
Scaled (by 0.9699) Zero Point Vibrational Energy (zpe) 9819.3 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 CCSD(T)/aug-cc-pVTZ
ABC
7.18724 0.21354 0.21351

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.096 0.556 0.000
O2 0.000 1.519 0.000
O3 0.000 -1.394 0.000
H4 0.902 1.851 0.000
H5 -0.500 -1.705 0.761
H6 -0.500 -1.705 -0.761

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96771.95311.52522.45912.4591
O20.96772.91380.96083.35033.3503
O31.95312.91383.36850.96240.9624
H41.52520.96083.36853.89733.8973
H52.45913.35030.96243.89731.5228
H62.45913.35030.96243.89731.5228

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 104.531 H1 O3 H5 110.328
H1 O3 H6 110.328 O2 H1 O3 171.528
H5 O3 H6 104.580
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability