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 KOH (Potassium hydroxide)

using model chemistry: HF/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at HF/3-21G
 hartrees
Energy at 0K-671.138032
Energy at 298.15K-671.139729
HF Energy-671.138032
Nuclear repulsion energy43.565771
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/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 Σ 3742 3388 205.71      
2 Σ 466 422 55.19      
3 Π 412 373 124.73      
3 Π 412 373 124.73      

Unscaled Zero Point Vibrational Energy (zpe) 2515.6 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 2278.2 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 HF/3-21G
B
0.26819

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 0.752
O2 0.000 0.000 -1.479
H3 0.000 0.000 -2.449

Atom - Atom Distances (Å)
  K1 O2 H3
K12.23043.2010
O22.23040.9706
H33.20100.9706

picture of Potassium hydroxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
K1 O2 H3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.733      
2 O -0.983      
3 H 0.250      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 7.494 7.494
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -18.281 0.000 0.000
y 0.000 -18.281 0.000
z 0.000 0.000 -17.312
Traceless
 xyz
x -0.484 0.000 0.000
y 0.000 -0.484 0.000
z 0.000 0.000 0.969
Polar
3z2-r21.937
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.847 0.000 0.000
y 0.000 1.847 0.000
z 0.000 0.000 4.089


<r2> (average value of r2) Å2
<r2> 45.443
(<r2>)1/2 6.741