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 HOClO (Chlorous acid)

using model chemistry: HF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at HF/6-31G
 hartrees
Energy at 0K-609.461628
Energy at 298.15K-609.462833
HF Energy-609.461628
Nuclear repulsion energy98.868343
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/6-31G
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 3870 3494 138.20      
2 A 1402 1266 30.97      
3 A 773 698 2.52      
4 A 302 273 59.81      
5 A 295 266 260.89      
6 A 168 152 11.31      

Unscaled Zero Point Vibrational Energy (zpe) 3405.0 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 3074.4 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/6-31G
ABC
0.57663 0.26725 0.18262

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Cl1 0.088 -0.659 0.000
O2 1.252 0.668 -0.000
O3 -1.525 0.551 -0.000
H4 0.698 1.457 0.001

Atom - Atom Distances (Å)
  Cl1 O2 O3 H4
Cl11.76562.01662.2028
O21.76562.77980.9645
O32.01662.77982.4008
H42.20280.96452.4008

picture of Chlorous acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl1 O2 H4 103.666 O2 Cl1 O3 94.377
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Cl 0.467      
2 O -0.629      
3 O -0.304      
4 H 0.466      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.418 0.499 0.003 0.651
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.599 0.862 0.002
y 0.862 -18.924 0.004
z 0.002 0.004 -24.510
Traceless
 xyz
x -6.882 0.862 0.002
y 0.862 7.631 0.004
z 0.002 0.004 -0.749
Polar
3z2-r2-1.498
x2-y2-9.675
xy0.862
xz0.002
yz0.004


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.400 0.168 -0.000
y 0.168 3.725 0.000
z -0.000 0.000 0.840


<r2> (average value of r2) Å2
<r2> 62.280
(<r2>)1/2 7.892