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

using model chemistry: B1B95/3-21G*

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 B1B95/3-21G*
 hartrees
Energy at 0K-689.287044
Energy at 298.15K-689.286323
HF Energy-689.287044
Nuclear repulsion energy60.946672
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 B1B95/3-21G*
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 2193 2094 2.55      
2 Σ 273 261 45.97      
3 Π 55 52 17.79      
3 Π 55 52 17.79      

Unscaled Zero Point Vibrational Energy (zpe) 1287.4 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 1229.4 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 B1B95/3-21G*
B
0.09884

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.308
C2 0.000 0.000 -1.279
N3 0.000 0.000 -2.454

Atom - Atom Distances (Å)
  K1 C2 N3
K12.58643.7616
C22.58641.1752
N33.76161.1752

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 B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.584      
2 C -0.116      
3 N -0.468      


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 12.096 12.096
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.472 0.000 0.000
y 0.000 -23.472 0.000
z 0.000 0.000 -29.168
Traceless
 xyz
x 2.848 0.000 0.000
y 0.000 2.848 0.000
z 0.000 0.000 -5.696
Polar
3z2-r2-11.393
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 3.215 0.000 0.000
y 0.000 3.215 0.000
z 0.000 0.000 5.449


<r2> (average value of r2) Å2
<r2> 100.299
(<r2>)1/2 10.015

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-689.294039
Energy at 298.15K 
HF Energy-689.294039
Nuclear repulsion energy64.556239
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 B1B95/3-21G*
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 2116 2021 82.38      
2 Σ 308 294 57.67      
3 Π 71i 68i 3.62      
3 Π 71i 68i 3.62      

Unscaled Zero Point Vibrational Energy (zpe) 1140.8 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 1089.3 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 B1B95/3-21G*
B
0.11515

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.205
C2 0.000 0.000 -2.400
N3 0.000 0.000 -1.215

Atom - Atom Distances (Å)
  K1 C2 N3
K13.60582.4201
C23.60581.1857
N32.42011.1857

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 B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.563      
2 C -0.001      
3 N -0.562      


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 12.008 12.008
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.468 0.000 0.000
y 0.000 -23.468 0.000
z 0.000 0.000 -31.490
Traceless
 xyz
x 4.011 0.000 0.000
y 0.000 4.011 0.000
z 0.000 0.000 -8.022
Polar
3z2-r2-16.044
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 3.080 0.000 0.000
y 0.000 3.080 0.000
z 0.000 0.000 5.433


<r2> (average value of r2) Å2
<r2> 88.836
(<r2>)1/2 9.425

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at B1B95/3-21G*
 hartrees
Energy at 0K-689.298116
Energy at 298.15K-689.297938
HF Energy-689.298116
Nuclear repulsion energy68.314419
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 B1B95/3-21G*
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' 2090 1995 19.49      
2 A' 345 329 42.01      
3 A' 106 101 10.62      

Unscaled Zero Point Vibrational Energy (zpe) 1270.2 cm-1
Scaled (by 0.9549) Zero Point Vibrational Energy (zpe) 1212.9 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 B1B95/3-21G*
ABC
1.94295 0.16194 0.14948

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.047 0.000
C2 0.625 -1.663 0.000
N3 -0.536 -1.417 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.78182.5225
C22.78181.1868
N32.52251.1868

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 65.063 K1 N3 C2 89.683
C2 K1 N3 25.254
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.504      
2 C -0.021      
3 N -0.482      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.352 10.270 0.000 10.276
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.963 1.126 0.000
y 1.126 -25.580 0.000
z 0.000 0.000 -23.719
Traceless
 xyz
x -3.314 1.126 0.000
y 1.126 0.261 0.000
z 0.000 0.000 3.053
Polar
3z2-r26.106
x2-y2-2.383
xy1.126
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.190 -0.217 0.000
y -0.217 3.714 0.000
z 0.000 0.000 3.099


<r2> (average value of r2) Å2
<r2> 71.948
(<r2>)1/2 8.482