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All results from a given calculation for HOCl (hypochlorous acid)

using model chemistry: mPW1PW91/6-31+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 mPW1PW91/6-31+G**
 hartrees
Energy at 0K-535.940745
Energy at 298.15K-535.941845
HF Energy-535.940745
Nuclear repulsion energy50.858376
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 mPW1PW91/6-31+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' 3837 3652 86.15 57.22 0.23 0.37
2 A' 1267 1206 41.17 4.22 0.61 0.76
3 A' 763 726 4.78 20.71 0.27 0.43

Unscaled Zero Point Vibrational Energy (zpe) 2933.2 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 2791.8 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 mPW1PW91/6-31+G**
ABC
20.50796 0.49938 0.48751

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.036 1.104 0.000
H2 -0.904 1.333 0.000
Cl3 0.036 -0.598 0.000

Atom - Atom Distances (Å)
  O1 H2 Cl3
O10.96761.7016
H20.96762.1476
Cl31.70162.1476

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 103.711
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.479      
2 H 0.377      
3 Cl 0.102      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.773 0.200 0.000 1.784
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -17.010 -2.784 0.000
y -2.784 -16.771 0.000
z 0.000 0.000 -19.366
Traceless
 xyz
x 1.058 -2.784 0.000
y -2.784 1.417 0.000
z 0.000 0.000 -2.475
Polar
3z2-r2-4.951
x2-y2-0.239
xy-2.784
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.926 -0.140 0.000
y -0.140 3.520 0.000
z 0.000 0.000 1.766


<r2> (average value of r2) Å2
<r2> 29.514
(<r2>)1/2 5.433