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: TPSSh/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C*V 1Σ
1 2 no C*V 1Σ
1 3 yes CS 1A'

Conformer 1 (C*V)

Jump to S1C2 S1C3
Energy calculated at TPSSh/TZVP
 hartrees
Energy at 0K-692.820636
Energy at 298.15K-692.820032
HF Energy-692.820636
Nuclear repulsion energy59.869997
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 TPSSh/TZVP
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 2178 2099 0.05      
2 Σ 258 249 53.54      
3 Π 91 87 15.31      
3 Π 91 87 15.31      

Unscaled Zero Point Vibrational Energy (zpe) 1308.7 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 1261.2 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 TPSSh/TZVP
B
0.09409

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.343
C2 0.000 0.000 -1.333
N3 0.000 0.000 -2.502

Atom - Atom Distances (Å)
  K1 C2 N3
K12.67533.8443
C22.67531.1689
N33.84431.1689

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 TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.907      
2 C -0.619      
3 N -0.288      


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 13.191 13.191
CHELPG        
AIM        
ESP        


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 2.900 0.000 0.001
y 0.000 2.900 -0.000
z 0.001 -0.000 6.893


<r2> (average value of r2) Å2
<r2> 104.737
(<r2>)1/2 10.234

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at TPSSh/TZVP
 hartrees
Energy at 0K-692.822504
Energy at 298.15K-692.821872
HF Energy-692.822504
Nuclear repulsion energy63.117782
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 TPSSh/TZVP
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 2128 2051 78.99      
2 Σ 299 288 62.89      
3 Π 69 66 4.29      
3 Π 69 66 4.29      

Unscaled Zero Point Vibrational Energy (zpe) 1282.1 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 1235.6 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 TPSSh/TZVP
B
0.10849

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.245
C2 0.000 0.000 -2.453
N3 0.000 0.000 -1.277

Atom - Atom Distances (Å)
  K1 C2 N3
K13.69792.5215
C23.69791.1765
N32.52151.1765

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 TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.914      
2 C -0.390      
3 N -0.524      


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 13.230 13.230
CHELPG        
AIM        
ESP        


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 2.744 0.000 0.000
y 0.000 2.744 0.000
z 0.000 0.000 6.716


<r2> (average value of r2) Å2
<r2> 93.468
(<r2>)1/2 9.668

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at TPSSh/TZVP
 hartrees
Energy at 0K-692.824147
Energy at 298.15K-692.823947
HF Energy-692.824147
Nuclear repulsion energy66.965213
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 TPSSh/TZVP
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' 2113 2037 21.02      
2 A' 273 263 55.35      
3 A' 141 136 5.54      

Unscaled Zero Point Vibrational Energy (zpe) 1263.9 cm-1
Scaled (by 0.9637) Zero Point Vibrational Energy (zpe) 1218.0 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 TPSSh/TZVP
ABC
1.91917 0.15268 0.14143

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.080 0.000
C2 0.628 -1.660 0.000
N3 -0.538 -1.509 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.81082.6450
C22.81081.1763
N32.64501.1763

picture of Potassium cyanide state 1 conformation 3
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
K1 C2 N3 69.756 K1 N3 C2 85.583
C2 K1 N3 24.661
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.852      
2 C -0.426      
3 N -0.426      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.422 11.327 0.000 11.335
CHELPG        
AIM        
ESP        


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 4.517 -0.258 0.000
y -0.258 4.160 0.000
z 0.000 0.000 3.011


<r2> (average value of r2) Å2
<r2> 75.208
(<r2>)1/2 8.672