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 HOCl (hypochlorous acid)

using model chemistry: B2PLYP=FULLultrafine/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B2PLYP=FULLultrafine/daug-cc-pVDZ
 hartrees
Energy at 0K-535.779287
Energy at 298.15K 
HF Energy-535.656393
Nuclear repulsion energy50.120733
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 B2PLYP=FULLultrafine/daug-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 A' 3761 3761 76.35 66.52 0.16 0.27
2 A' 1253 1253 43.19 2.90 0.29 0.45
3 A' 732 732 6.01 16.98 0.20 0.33

Unscaled Zero Point Vibrational Energy (zpe) 2872.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2872.9 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 B2PLYP=FULLultrafine/daug-cc-pVDZ
ABC
20.14018 0.48390 0.47255

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/daug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.036 1.123 0.000
H2 -0.911 1.334 0.000
Cl3 0.036 -0.607 0.000

Atom - Atom Distances (Å)
  O1 H2 Cl3
O10.97081.7302
H20.97082.1598
Cl31.73022.1598

picture of hypochlorous acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 O1 Cl3 102.528
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability