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 KCN (Potassium cyanide)

using model chemistry: HF/LANL2DZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C*V 1Σ
1 2 yes C*V 1Σ

Conformer 1 (C*V)

Jump to S1C2
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-120.141162
Energy at 298.15K-120.140637
HF Energy-120.141162
Nuclear repulsion energy38.229429
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/LANL2DZ
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 2299 2068 5.23      
2 Σ 275 247 58.24      
3 Π 109 98 12.39      
3 Π 109 98 12.39      

Unscaled Zero Point Vibrational Energy (zpe) 1395.3 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 1255.6 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/LANL2DZ
B
0.09353

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.347
C2 0.000 0.000 -1.336
N3 0.000 0.000 -2.510

Atom - Atom Distances (Å)
  K1 C2 N3
K12.68243.8564
C22.68241.1740
N33.85641.1740

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 180.000 K1 N3 C2 0.000
C2 K1 N3 0.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.855      
2 C -0.577      
3 N -0.278      


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 13.952 13.952
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.601 0.000 0.000
y 0.000 -22.601 0.000
z 0.000 0.000 -31.579
Traceless
 xyz
x 4.489 0.000 0.000
y 0.000 4.489 0.000
z 0.000 0.000 -8.978
Polar
3z2-r2-17.955
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 2.054 0.000 0.000
y 0.000 2.054 0.000
z 0.000 0.000 4.318


<r2> (average value of r2) Å2
<r2> 87.107
(<r2>)1/2 9.333

Conformer 2 (C*V)

Jump to S1C1
Energy calculated at HF/LANL2DZ
 hartrees
Energy at 0K-120.149811
Energy at 298.15K-120.149343
HF Energy-120.149811
Nuclear repulsion energy39.906168
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/LANL2DZ
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 2226 2003 134.05      
2 Σ 320 288 67.20      
3 Π 109 98 9.04      
3 Π 109 98 9.04      

Unscaled Zero Point Vibrational Energy (zpe) 1381.8 cm-1
Scaled (by 0.8999) Zero Point Vibrational Energy (zpe) 1243.5 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/LANL2DZ
B
0.11002

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/LANL2DZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.235
C2 0.000 0.000 -2.443
N3 0.000 0.000 -1.259

Atom - Atom Distances (Å)
  K1 C2 N3
K13.67812.4939
C23.67811.1841
N32.49391.1841

picture of Potassium cyanide state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
K1 C2 N3 0.000 K1 N3 C2 180.000
C2 K1 N3 0.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.872      
2 C -0.241      
3 N -0.631      


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 13.075 13.075
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.326 0.000 0.000
y 0.000 -22.326 0.000
z 0.000 0.000 -31.895
Traceless
 xyz
x 4.784 0.000 0.000
y 0.000 4.784 0.000
z 0.000 0.000 -9.568
Polar
3z2-r2-19.137
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 1.908 0.000 0.000
y 0.000 1.908 0.000
z 0.000 0.000 4.107


<r2> (average value of r2) Å2
<r2> 76.565
(<r2>)1/2 8.750