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

using model chemistry: B1B95/6-311G**

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 B1B95/6-311G**
 hartrees
Energy at 0K-692.844692
Energy at 298.15K-692.844086
HF Energy-692.844692
Nuclear repulsion energy61.277632
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 B1B95/6-311G**
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 2236 2147 2.34      
2 Σ 293 281 67.15      
3 Π 78 75 10.82      
3 Π 78 75 10.82      

Unscaled Zero Point Vibrational Energy (zpe) 1342.2 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 1288.6 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 B1B95/6-311G**
B
0.09961

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.303
C2 0.000 0.000 -1.279
N3 0.000 0.000 -2.441

Atom - Atom Distances (Å)
  K1 C2 N3
K12.58203.7446
C22.58201.1625
N33.74461.1625

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 B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.761      
2 C -0.432      
3 N -0.329      


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 12.013 12.013
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.856 0.000 0.000
y 0.000 -22.856 0.000
z 0.000 0.000 -30.368
Traceless
 xyz
x 3.756 0.000 0.000
y 0.000 3.756 0.000
z 0.000 0.000 -7.513
Polar
3z2-r2-15.025
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 3.078 0.000 0.000
y 0.000 3.078 0.000
z 0.000 0.000 6.378


<r2> (average value of r2) Å2
<r2> 99.642
(<r2>)1/2 9.982

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-692.847542
Energy at 298.15K 
HF Energy-692.847542
Nuclear repulsion energy64.723885
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 B1B95/6-311G**
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 2168 2082 125.67      
2 Σ 315 302 82.90      
3 Π 56i 54i 2.21      
3 Π 56i 54i 2.21      

Unscaled Zero Point Vibrational Energy (zpe) 1185.3 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 1138.0 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 B1B95/6-311G**
B
0.11525

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.206
C2 0.000 0.000 -2.393
N3 0.000 0.000 -1.222

Atom - Atom Distances (Å)
  K1 C2 N3
K13.59912.4274
C23.59911.1717
N32.42741.1717

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 B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.768      
2 C -0.223      
3 N -0.546      


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 11.952 11.952
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.758 0.000 0.000
y 0.000 -22.758 0.000
z 0.000 0.000 -32.652
Traceless
 xyz
x 4.947 0.000 0.000
y 0.000 4.947 0.000
z 0.000 0.000 -9.894
Polar
3z2-r2-19.787
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 2.938 0.000 -0.000
y 0.000 2.938 -0.000
z -0.000 -0.000 6.216


<r2> (average value of r2) Å2
<r2> 88.714
(<r2>)1/2 9.419

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at B1B95/6-311G**
 hartrees
Energy at 0K-692.852186
Energy at 298.15K-692.852112
HF Energy-692.852186
Nuclear repulsion energy69.085126
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 B1B95/6-311G**
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' 2158 2072 24.21      
2 A' 328 315 66.66      
3 A' 178 171 10.16      

Unscaled Zero Point Vibrational Energy (zpe) 1332.2 cm-1
Scaled (by 0.9601) Zero Point Vibrational Energy (zpe) 1279.0 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 B1B95/6-311G**
ABC
1.94300 0.16634 0.15322

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.035 0.000
C2 0.625 -1.601 0.000
N3 -0.535 -1.436 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.70842.5282
C22.70841.1714
N32.52821.1714

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 68.596 K1 N3 C2 85.849
C2 K1 N3 25.555
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.706      
2 C -0.270      
3 N -0.436      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.436 9.969 0.000 9.979
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.082 0.943 0.000
y 0.943 -26.132 0.000
z 0.000 0.000 -22.994
Traceless
 xyz
x -2.519 0.943 0.000
y 0.943 -1.094 0.000
z 0.000 0.000 3.613
Polar
3z2-r27.226
x2-y2-0.950
xy0.943
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.374 -0.210 0.000
y -0.210 4.463 0.000
z 0.000 0.000 3.221


<r2> (average value of r2) Å2
<r2> 70.366
(<r2>)1/2 8.388