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

using model chemistry: QCISD/6-311G*

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/6-311G*
 hartrees
Energy at 0K-152.498545
Energy at 298.15K-152.501376
HF Energy-152.073708
Counterpoise corrected energy-152.498545
CP Energy at 298.15K-152.501376
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.851076
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/6-311G*
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' 3937 3769 75.93      
2 A' 3843 3679 1.47      
3 A' 3811 3648 138.24      
4 A' 1794 1718 86.96      
5 A' 1755 1680 110.52      
6 A' 403 386 111.51      
7 A' 205 197 17.78      
8 A' 151 145 373.34      
9 A" 3959 3791 36.16      
10 A" 704 674 223.72      
11 A" 171 164 200.77      
12 A" 90 86 28.35      

Unscaled Zero Point Vibrational Energy (zpe) 10411.8 cm-1
Scaled (by 0.9574) Zero Point Vibrational Energy (zpe) 9968.2 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/6-311G*
ABC
7.24888 0.21853 0.21834

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.134 0.548 0.000
O2 0.004 1.502 0.000
O3 0.004 -1.410 0.000
H4 0.879 1.894 0.000
H5 -0.542 -1.589 0.771
H6 -0.542 -1.589 -0.771

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.96241.96221.53832.37072.3707
O20.96242.91150.95853.23223.2322
O31.96222.91153.41780.96190.9619
H41.53830.95853.41783.84043.8404
H52.37073.23220.96193.84041.5419
H62.37073.23220.96193.84041.5419

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 106.416 H1 O3 H5 102.935
H1 O3 H6 102.935 O2 H1 O3 168.435
H5 O3 H6 106.539
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability