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

using model chemistry: TPSSh/6-31G**

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/6-31G**
 hartrees
Energy at 0K-692.752142
Energy at 298.15K-692.751487
HF Energy-692.752142
Nuclear repulsion energy60.608704
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/6-31G**
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 2192 2101 1.19      
2 Σ 288 276 52.36      
3 Π 68 65 10.51      
3 Π 68 65 10.51      

Unscaled Zero Point Vibrational Energy (zpe) 1307.1 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 1253.2 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/6-31G**
B
0.09754

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.317
C2 0.000 0.000 -1.291
N3 0.000 0.000 -2.468

Atom - Atom Distances (Å)
  K1 C2 N3
K12.60743.7848
C22.60741.1774
N33.78481.1774

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/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.679      
2 C -0.241      
3 N -0.438      


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 11.988 11.988
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 3.409 0.001 0.001
y 0.001 3.409 0.000
z 0.001 0.000 7.163


<r2> (average value of r2) Å2
<r2> 101.445
(<r2>)1/2 10.072

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at TPSSh/6-31G**
 hartrees
Energy at 0K-692.752434
Energy at 298.15K 
HF Energy-692.752434
Nuclear repulsion energy63.972240
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/6-31G**
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 2131 2043 88.68      
2 Σ 324 311 61.75      
3 Π 81i 78i 2.42      
3 Π 82i 78i 2.40      

Unscaled Zero Point Vibrational Energy (zpe) 1145.8 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 1098.5 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 TPSSh/6-31G**
B
0.11262

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.220
C2 0.000 0.000 -2.421
N3 0.000 0.000 -1.235

Atom - Atom Distances (Å)
  K1 C2 N3
K13.64132.4552
C23.64131.1860
N32.45521.1860

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/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.712      
2 C -0.128      
3 N -0.584      


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 11.874 11.874
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 3.430 -0.002 0.002
y -0.002 3.428 0.001
z 0.002 0.001 7.148


<r2> (average value of r2) Å2
<r2> 90.438
(<r2>)1/2 9.510

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at TPSSh/6-31G**
 hartrees
Energy at 0K-692.759314
Energy at 298.15K-692.759211
HF Energy-692.759314
Nuclear repulsion energy68.310410
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/6-31G**
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' 2111 2024 19.38      
2 A' 304 292 61.16      
3 A' 180 173 3.06      

Unscaled Zero Point Vibrational Energy (zpe) 1297.8 cm-1
Scaled (by 0.9587) Zero Point Vibrational Energy (zpe) 1244.2 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/6-31G**
ABC
1.87204 0.16330 0.15020

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.045 0.000
C2 0.636 -1.589 0.000
N3 -0.545 -1.474 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.70922.5769
C22.70921.1866
N32.57691.1866

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 70.869 K1 N3 C2 83.344
C2 K1 N3 25.787
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.645      
2 C -0.156      
3 N -0.489      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.413 9.952 0.000 9.960
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 4.636 -0.086 0.000
y -0.086 4.648 0.000
z 0.000 0.000 3.515


<r2> (average value of r2) Å2
<r2> 71.516
(<r2>)1/2 8.457