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

using model chemistry: PBEPBEultrafine_cp_opt/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-152.706430
Energy at 298.15K-152.709268
Nuclear repulsion energy36.403522
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/6-31+G**
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 3799 3756 74.86      
2 A 3705 3663 10.47      
3 A 3558 3517 371.76      
4 A 1594 1576 39.20      
5 A 1579 1561 112.62      
6 A 392 387 58.68      
7 A 201 198 251.11      
8 A 155 153 146.79      
9 A 3826 3782 71.33      
10 A 654 646 135.43      
11 A 157 155 124.78      
12 A 132 131 103.54      

Unscaled Zero Point Vibrational Energy (zpe) 9875.2 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 9762.7 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/6-31+G**
ABC
6.90675 0.21508 0.21501

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
H1 0.128 0.534 0.000
O2 0.002 1.509 0.000
O3 0.002 -1.398 0.000
H4 0.899 1.883 0.000
H5 -0.531 -1.653 0.774
H6 -0.531 -1.653 -0.774
X7 1.025 0.908 0.000
X8 -1.064 -1.908 0.000

Atom - Atom Distances (Å)
  H1 O2 O3 H4 H5 H6 X7 X8
H10.98291.93581.55352.41142.41140.97172.7169
O20.98292.90650.97173.29823.29821.18643.5788
O31.93582.90653.40080.97370.97372.52231.1814
H41.55350.97173.40083.89133.89130.98294.2683
H52.41143.29820.97373.89131.54803.09450.9737
H62.41143.29820.97373.89131.54803.09450.9737
X70.97171.18642.52230.98293.09453.09453.5056
X82.71693.57881.18144.26830.97370.97373.5056

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 105.261 H1 O3 H5 107.271
H1 O3 H6 107.271 O2 H1 O3 168.904
H5 O3 H6 105.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability