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

using model chemistry: MP2/aug-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 MP2/aug-cc-pVDZ
 hartrees
Energy at 0K-152.530207
Energy at 298.15K-152.532965
HF Energy-152.087427
Counterpoise corrected energy 
CP Energy at 298.15K 
Counterpoise optimized geometry corrected energy 
CP opt. Energy at 298.15K 
Nuclear repulsion energy36.452293
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 MP2/aug-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' 3904 3744 113.66      
2 A' 3796 3640 10.30      
3 A' 3704 3552 280.60      
4 A' 1643 1575 32.34      
5 A' 1624 1558 85.94      
6 A' 358 344 53.80      
7 A' 184 176 118.98      
8 A' 148 142 161.11      
9 A" 3925 3764 88.24      
10 A" 639 613 91.32      
11 A" 151 145 57.85      
12 A" 127 122 114.38      

Unscaled Zero Point Vibrational Energy (zpe) 10102.1 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 9687.9 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 MP2/aug-cc-pVDZ
ABC
7.14401 0.21310 0.21306

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.094 0.554 0.000
O2 0.000 1.522 0.000
O3 0.000 -1.394 0.000
H4 0.908 1.849 0.000
H5 -0.501 -1.713 0.763
H6 -0.501 -1.713 -0.763

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6
H10.97281.95051.52982.46462.4646
O20.97282.91660.96483.36143.3614
O31.95052.91663.36810.96660.9666
H41.52980.96483.36813.90583.9058
H52.46463.36140.96663.90581.5254
H62.46463.36140.96663.90581.5254

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 104.275 H1 O3 H5 110.738
H1 O3 H6 110.738 O2 H1 O3 171.713
H5 O3 H6 104.188
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability