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

using model chemistry: MP3=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP3=FULL/6-31G*
 hartrees
Energy at 0K-152.420799
Energy at 298.15K-152.423629
HF Energy-152.028823
Nuclear repulsion energy36.429499
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 MP3=FULL/6-31G*
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' 3904 3663 88.74      
2 A' 3804 3570 13.44      
3 A' 3768 3535 178.07      
4 A' 1784 1674 88.03      
5 A' 1748 1640 93.39      
6 A' 421 395 54.30      
7 A' 207 194 158.71      
8 A' 150 141 248.12      
9 A" 3917 3675 56.98      
10 A" 661 620 175.04      
11 A" 157 147 147.34      
12 A" 110 103 77.21      

Unscaled Zero Point Vibrational Energy (zpe) 10315.0 cm-1
Scaled (by 0.9383) Zero Point Vibrational Energy (zpe) 9678.6 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 MP3=FULL/6-31G*
ABC
6.77500 0.21276 0.21243

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.171 0.548 0.000
O2 0.005 1.505 0.000
O3 0.005 -1.417 0.000
H4 0.885 1.903 0.000
H5 -0.565 -1.579 0.767
H6 -0.565 -1.579 -0.767

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97201.97121.53162.37782.3778
O20.97202.92170.96593.22893.2289
O31.97122.92173.43420.96910.9691
H41.53160.96593.43423.84913.8491
H52.37783.22890.96913.84911.5336
H62.37783.22890.96913.84911.5336

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 104.427 H1 O3 H5 102.531
H1 O3 H6 102.531 O2 H1 O3 165.259
H5 O3 H6 104.611
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability