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

using model chemistry: LSDA/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 LSDA/6-31G**
 hartrees
Energy at 0K-690.847913
Energy at 298.15K-690.847320
HF Energy-690.847913
Nuclear repulsion energy61.400701
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 LSDA/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 2190 2149 2.18      
2 Σ 305 299 47.98      
3 Π 79 77 10.36      
3 Π 79 77 10.36      

Unscaled Zero Point Vibrational Energy (zpe) 1325.9 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 1301.1 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 LSDA/6-31G**
B
0.10080

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.294
C2 0.000 0.000 -1.258
N3 0.000 0.000 -2.435

Atom - Atom Distances (Å)
  K1 C2 N3
K12.55243.7289
C22.55241.1765
N33.72891.1765

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 LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.619      
2 C -0.226      
3 N -0.393      


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 11.367 11.367
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.253 0.000 0.000
y 0.000 -23.253 0.000
z 0.000 0.000 -29.723
Traceless
 xyz
x 3.235 0.000 0.000
y 0.000 3.235 0.000
z 0.000 0.000 -6.471
Polar
3z2-r2-12.941
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 3.717 0.000 0.000
y 0.000 3.717 0.000
z 0.000 0.000 7.951


<r2> (average value of r2) Å2
<r2> 98.687
(<r2>)1/2 9.934

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at LSDA/6-31G**
 hartrees
Energy at 0K-690.846938
Energy at 298.15K 
HF Energy-690.846938
Nuclear repulsion energy64.819018
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 LSDA/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 2129 2090 76.57      
2 Σ 340 333 55.52      
3 Π 82i 81i 1.87      
3 Π 82i 81i 1.87      

Unscaled Zero Point Vibrational Energy (zpe) 1152.2 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 1130.7 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 LSDA/6-31G**
B
0.11626

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.199
C2 0.000 0.000 -2.391
N3 0.000 0.000 -1.206

Atom - Atom Distances (Å)
  K1 C2 N3
K13.59032.4054
C23.59031.1849
N32.40541.1849

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 LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.656      
2 C -0.149      
3 N -0.507      


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 11.385 11.385
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.354 0.000 0.000
y 0.000 -23.354 0.000
z 0.000 0.000 -31.935
Traceless
 xyz
x 4.291 0.000 0.000
y 0.000 4.291 0.000
z 0.000 0.000 -8.582
Polar
3z2-r2-17.164
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 3.827 -0.000 -0.000
y -0.000 3.826 -0.000
z -0.000 -0.000 8.242


<r2> (average value of r2) Å2
<r2> 88.185
(<r2>)1/2 9.391

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at LSDA/6-31G**
 hartrees
Energy at 0K-690.856057
Energy at 298.15K-690.856020
HF Energy-690.856057
Nuclear repulsion energy69.587839
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 LSDA/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 2071 14.67      
2 A' 329 323 59.71      
3 A' 205 201 2.39      

Unscaled Zero Point Vibrational Energy (zpe) 1322.6 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 1297.8 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 LSDA/6-31G**
ABC
1.86950 0.17226 0.15773

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.017 0.000
C2 0.636 -1.535 0.000
N3 -0.545 -1.445 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.63072.5225
C22.63071.1850
N32.52251.1850

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 71.660 K1 N3 C2 81.858
C2 K1 N3 26.482
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.576      
2 C -0.146      
3 N -0.430      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.467 9.323 0.000 9.335
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.449 0.526 0.000
y 0.526 -25.358 0.000
z 0.000 0.000 -23.537
Traceless
 xyz
x -3.001 0.526 0.000
y 0.526 0.135 0.000
z 0.000 0.000 2.866
Polar
3z2-r25.733
x2-y2-2.091
xy0.526
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.786 -0.032 -0.000
y -0.032 5.101 0.000
z -0.000 0.000 3.802


<r2> (average value of r2) Å2
<r2> 68.839
(<r2>)1/2 8.297