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All results from a given calculation for H2O (Water)

using model chemistry: CCSD(T)/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCSD(T)/CEP-31G*
 hartrees
Energy at 0K-17.044123
Energy at 298.15K-17.045220
HF Energy-16.850013
Nuclear repulsion energy6.847649
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 CCSD(T)/CEP-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 A1 3756 3542        
2 A1 1713 1616        
3 B2 3885 3664        

Unscaled Zero Point Vibrational Energy (zpe) 4676.8 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 4410.7 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 CCSD(T)/CEP-31G*
ABC
26.20835 14.08248 9.16036

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/CEP-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.120
H2 0.000 0.771 -0.480
H3 0.000 -0.771 -0.480

Atom - Atom Distances (Å)
  O1 H2 H3
O10.97630.9763
H20.97631.5413
H30.97631.5413

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 104.245
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability