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

using model chemistry: PBEPBEultrafine_cp_opt/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 PBEPBEultrafine_cp_opt/aug-cc-pVTZ
 hartrees
Energy at 0K-152.768717
Energy at 298.15K-152.771560
Nuclear repulsion energy36.510291
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 PBEPBEultrafine_cp_opt/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 3769 3731 66.96      
2 A 3690 3653 7.12      
3 A 3530 3495 388.16      
4 A 1610 1594 27.28      
5 A 1592 1576 85.13      
6 A 379 376 36.11      
7 A 196 194 207.13      
8 A 163 161 70.78      
9 A 3791 3753 72.16      
10 A 641 635 74.62      
11 A 161 160 0.29      
12 A 131 130 160.53      

Unscaled Zero Point Vibrational Energy (zpe) 9826.7 cm-1
Scaled (by 0.99) Zero Point Vibrational Energy (zpe) 9728.4 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 PBEPBEultrafine_cp_opt/aug-cc-pVTZ
ABC
6.91910 0.21638 0.21622

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.105 0.532 0.000
O2 0.003 1.508 0.000
O3 0.003 -1.391 0.000
H4 0.910 1.848 0.000
H5 -0.529 -1.655 0.768
H6 -0.529 -1.655 -0.768
X7 1.013 0.873 0.000
X8 -1.062 -1.919 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6 X7 X8
H10.98061.92671.54232.40392.40390.96922.7147
O20.98062.89920.96923.29793.29791.19313.5878
O31.92672.89923.36440.97110.97112.47951.1876
H41.54230.96923.36443.86463.86460.98064.2516
H52.40393.29790.97113.86461.53673.05940.9711
H62.40393.29790.97113.86461.53673.05940.9711
X70.96921.19312.47950.98063.05943.05943.4780
X82.71473.58781.18764.25160.97110.97113.4780

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 104.552 H1 O3 H5 107.474
H1 O3 H6 107.474 O2 H1 O3 170.927
H5 O3 H6 104.602
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability