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

using model chemistry: B2PLYP/6-31G(2df,p)

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 B2PLYP/6-31G(2df,p)
 hartrees
Energy at 0K-692.506507
Energy at 298.15K-692.505793
HF Energy-692.362527
Nuclear repulsion energy61.054993
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 B2PLYP/6-31G(2df,p)
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 2134 2038 6.68      
2 Σ 291 278 58.57      
3 Π 50 48 9.56      
3 Π 50 48 9.56      

Unscaled Zero Point Vibrational Energy (zpe) 1262.7 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 1205.9 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 B2PLYP/6-31G(2df,p)
B
0.09930

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.305
C2 0.000 0.000 -1.274
N3 0.000 0.000 -2.449

Atom - Atom Distances (Å)
  K1 C2 N3
K12.57863.7538
C22.57861.1753
N33.75381.1753

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 B2PLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.639      
2 C -0.446      
3 N -0.193      


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 11.870 11.870
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.050 0.000 0.000
y 0.000 -23.050 0.000
z 0.000 0.000 -30.009
Traceless
 xyz
x 3.480 0.000 0.000
y 0.000 3.480 0.000
z 0.000 0.000 -6.959
Polar
3z2-r2-13.919
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 3.452 0.000 0.000
y 0.000 3.452 0.000
z 0.000 0.000 6.354


<r2> (average value of r2) Å2
<r2> 99.913
(<r2>)1/2 9.996

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at B2PLYP/6-31G(2df,p)
 hartrees
Energy at 0K-692.509029
Energy at 298.15K 
HF Energy-692.367972
Nuclear repulsion energy64.657800
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 B2PLYP/6-31G(2df,p)
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 2089 1995 92.78      
2 Σ 331 317 72.37      
3 Π 88i 84i 1.12      
3 Π 88i 84i 1.12      

Unscaled Zero Point Vibrational Energy (zpe) 1122.1 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 1071.6 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 B2PLYP/6-31G(2df,p)
B
0.11547

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.204
C2 0.000 0.000 -2.396
N3 0.000 0.000 -1.214

Atom - Atom Distances (Å)
  K1 C2 N3
K13.60042.4175
C23.60041.1829
N32.41751.1829

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 B2PLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.677      
2 C -0.368      
3 N -0.309      


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 11.776 11.776
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.043 0.000 0.000
y 0.000 -23.043 0.000
z 0.000 0.000 -32.373
Traceless
 xyz
x 4.665 0.000 0.000
y 0.000 4.665 0.000
z 0.000 0.000 -9.330
Polar
3z2-r2-18.661
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 3.389 0.000 0.000
y 0.000 3.389 0.000
z 0.000 0.000 6.096


<r2> (average value of r2) Å2
<r2> 88.642
(<r2>)1/2 9.415

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at B2PLYP/6-31G(2df,p)
 hartrees
Energy at 0K-692.516130
Energy at 298.15K-692.516043
HF Energy-692.373029
Nuclear repulsion energy68.888696
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 B2PLYP/6-31G(2df,p)
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' 2064 1971 16.15      
2 A' 312 298 64.56      
3 A' 184 176 4.48      

Unscaled Zero Point Vibrational Energy (zpe) 1279.7 cm-1
Scaled (by 0.955) Zero Point Vibrational Energy (zpe) 1222.1 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 B2PLYP/6-31G(2df,p)
ABC
1.88528 0.16690 0.15333

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.033 0.000
C2 0.634 -1.580 0.000
N3 -0.543 -1.450 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.68882.5424
C22.68881.1841
N32.54241.1841

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 70.095 K1 N3 C2 83.935
C2 K1 N3 25.970
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.598      
2 C -0.321      
3 N -0.277      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.482 9.710 0.000 9.722
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.386 0.831 0.000
y 0.831 -25.533 0.000
z 0.000 0.000 -23.330
Traceless
 xyz
x -2.954 0.831 0.000
y 0.831 -0.175 0.000
z 0.000 0.000 3.130
Polar
3z2-r26.259
x2-y2-1.852
xy0.831
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.468 -0.118 0.000
y -0.118 4.550 0.000
z 0.000 0.000 3.527


<r2> (average value of r2) Å2
<r2> 70.336
(<r2>)1/2 8.387