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All results from a given calculation for KCN (Potassium cyanide)

using model chemistry: ROMP2/TZVP

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 ROMP2/TZVP
 hartrees
Energy at 0K-691.807779
Energy at 298.15K 
HF Energy-691.511804
Nuclear repulsion energy65.478973
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 ROMP2/TZVP
Rotational Constants (cm-1) from geometry optimized at ROMP2/TZVP
ABC
1.86554 0.14441 0.13404

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.111 0.000
C2 0.637 -1.662 0.000
N3 -0.546 -1.592 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.84582.7574
C22.84581.1848
N32.75741.1848

picture of Potassium cyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
K1 C2 N3 73.643 K1 N3 C2 82.008
C2 K1 N3 24.349
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.913      
2 C -0.410      
3 N -0.503      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 78.604
(<r2>)1/2 8.866