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

using model chemistry: HF/CEP-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-31G
 hartrees
Energy at 0K-30.836444
Energy at 298.15K-30.837551
HF Energy-30.836444
Nuclear repulsion energy17.479720
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 HF/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 A' 4012 3616 97.05 111.66 0.29 0.45
2 A' 1334 1203 24.18 6.11 0.70 0.82
3 A' 772 696 0.51 64.28 0.33 0.50

Unscaled Zero Point Vibrational Energy (zpe) 3059.0 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 2757.4 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 HF/CEP-31G
ABC
21.32448 0.45888 0.44921

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.036 1.148 0.000
H2 -0.888 1.426 0.000
Cl3 0.036 -0.624 0.000

Atom - Atom Distances (Å)
  O1 H2 Cl3
O10.96421.7724
H20.96422.2488
Cl31.77242.2488

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 106.765
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.576      
2 H 0.401      
3 Cl 0.175      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -2.277 0.154 0.000 2.282
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -16.500 -3.337 0.000
y -3.337 -16.517 0.000
z 0.000 0.000 -18.636
Traceless
 xyz
x 1.077 -3.337 0.000
y -3.337 1.051 0.000
z 0.000 0.000 -2.128
Polar
3z2-r2-4.256
x2-y20.017
xy-3.337
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.908 -0.315 0.000
y -0.315 4.224 0.000
z 0.000 0.000 0.292


<r2> (average value of r2) Å2
<r2> 24.231
(<r2>)1/2 4.922