return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for H2O (Water)

using model chemistry: CCD/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-76.237446
Energy at 298.15K-76.238544
HF Energy-76.026319
Nuclear repulsion energy9.135499
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/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 A1 3866 3698 5.16      
2 A1 1700 1626 57.27      
3 B2 3969 3797 24.69      

Unscaled Zero Point Vibrational Energy (zpe) 4767.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 4560.6 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/cc-pVDZ
ABC
25.74664 14.84116 9.41441

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.121
H2 0.000 0.751 -0.484
H3 0.000 -0.751 -0.484

Atom - Atom Distances (Å)
  O1 H2 H3
O10.96400.9640
H20.96401.5014
H30.96401.5014

picture of Water state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 H3 102.287
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability