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All results from a given calculation for H2O (Water)

using model chemistry: CCD/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/3-21G
 hartrees
Energy at 0K-75.714619
Energy at 298.15K-75.715717
HF Energy-75.584859
Nuclear repulsion energy8.880254
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 CCD/3-21G
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 3467 3371 12.12      
2 A1 1732 1684 45.09      
3 B2 3608 3508 2.27      

Unscaled Zero Point Vibrational Energy (zpe) 4403.5 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 4281.5 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 CCD/3-21G
ABC
25.89229 13.52512 8.88431

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.121
H2 0.000 0.786 -0.482
H3 0.000 -0.786 -0.482

Atom - Atom Distances (Å)
  O1 H2 H3
O10.99100.9910
H20.99101.5727
H30.99101.5727

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 105.028
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability