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All results from a given calculation for HOI (Hypoiodous acid)

using model chemistry: PBEPBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBEPBE/3-21G*
 hartrees
Energy at 0K-6965.314298
Energy at 298.15K 
HF Energy-6965.314298
Nuclear repulsion energy124.782082
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 PBEPBE/3-21G*
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' 3299 3146 20.39 87.70 0.31 0.47
2 A' 1079 1029 55.99 7.38 0.59 0.74
3 A' 585 558 5.23 13.57 0.29 0.45

Unscaled Zero Point Vibrational Energy (zpe) 2481.6 cm-1
Scaled (by 0.9535) Zero Point Vibrational Energy (zpe) 2366.2 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 PBEPBE/3-21G*
ABC
18.45928 0.26298 0.25928

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.016 1.751 0.000
I2 0.016 -0.302 0.000
H3 -0.973 1.978 0.000

Atom - Atom Distances (Å)
  O1 I2 H3
O12.05241.0146
I22.05242.4851
H31.01462.4851

picture of Hypoiodous acid state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
I2 O1 H3 102.962
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.486      
2 I 0.131      
3 H 0.355      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.547 -0.167 0.000 1.555
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -32.699 -3.752 0.000
y -3.752 -30.877 0.000
z 0.000 0.000 -34.829
Traceless
 xyz
x 0.155 -3.752 0.000
y -3.752 2.887 0.000
z 0.000 0.000 -3.042
Polar
3z2-r2-6.083
x2-y2-1.822
xy-3.752
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.624 -0.331 0.000
y -0.331 5.438 0.000
z 0.000 0.000 3.136


<r2> (average value of r2) Å2
<r2> 54.705
(<r2>)1/2 7.396