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 KCl (Potassium Chloride)

using model chemistry: M06-2X/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 M06-2X/3-21G*
 hartrees
Energy at 0K-1055.053788
Energy at 298.15K-1055.054454
HF Energy-1055.053788
Nuclear repulsion energy62.872300
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 M06-2X/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 286 271 38.18      

Unscaled Zero Point Vibrational Energy (zpe) 142.9 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 135.3 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 M06-2X/3-21G*
B
0.12377

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.284
Cl2 0.000 0.000 -1.435

Atom - Atom Distances (Å)
  K1 Cl2
K12.7186
Cl22.7186

picture of Potassium Chloride state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.700      
2 Cl -0.700      


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 10.930 10.930
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.368 0.000 0.000
y 0.000 -25.368 0.000
z 0.000 0.000 -24.251
Traceless
 xyz
x -0.559 0.000 0.000
y 0.000 -0.559 0.000
z 0.000 0.000 1.117
Polar
3z2-r22.235
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 2.853 0.000 0.000
y 0.000 2.853 0.000
z 0.000 0.000 4.449


<r2> (average value of r2) Å2
<r2> 81.923
(<r2>)1/2 9.051