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

using model chemistry: B2PLYP/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
1 2 no C*V 1Σ
1 3 no CS 1A'

Conformer 1 (C*V)

Jump to S1C2 S1C3
Energy calculated at B2PLYP/STO-3G
 hartrees
Energy at 0K-685.114584
Energy at 298.15K-685.114355
HF Energy-685.054687
Nuclear repulsion energy61.292669
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/STO-3G
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 2691 2691 5010.82      
2 Σ 402 402 132.16      
3 Π 184 184 9.67      
3 Π 184 184 9.67      

Unscaled Zero Point Vibrational Energy (zpe) 1730.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1730.3 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 B2PLYP/STO-3G
B
0.10137

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.289
C2 0.000 0.000 -1.238
N3 0.000 0.000 -2.437

Atom - Atom Distances (Å)
  K1 C2 N3
K12.52713.7263
C22.52711.1992
N33.72631.1992

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/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.500      
2 C -0.174      
3 N -0.326      


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 10.395 10.395
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.514 0.000 0.000
y 0.000 -21.514 0.000
z 0.000 0.000 -26.205
Traceless
 xyz
x 2.345 0.000 0.000
y 0.000 2.345 0.000
z 0.000 0.000 -4.691
Polar
3z2-r2-9.382
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 1.774 0.000 0.000
y 0.000 1.774 0.000
z 0.000 0.000 -2.864


<r2> (average value of r2) Å2
<r2> 96.764
(<r2>)1/2 9.837

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at B2PLYP/STO-3G
 hartrees
Energy at 0K-685.066144
Energy at 298.15K 
HF Energy-685.043918
Nuclear repulsion energy64.665611
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/STO-3G
Rotational Constants (cm-1) from geometry optimized at B2PLYP/STO-3G
B
0.10137

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is C∞v

Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.590      
2 C -0.177      
3 N -0.413      


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 10.965 10.965
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.894 0.000 0.000
y 0.000 -20.894 0.000
z 0.000 0.000 -28.861
Traceless
 xyz
x 3.983 0.000 0.000
y 0.000 3.983 0.000
z 0.000 0.000 -7.967
Polar
3z2-r2-15.934
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 1.774 0.000 0.000
y 0.000 1.774 0.000
z 0.000 0.000 -2.864


<r2> (average value of r2) Å2
<r2> 88.443
(<r2>)1/2 9.404

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at B2PLYP/STO-3G
 hartrees
Energy at 0K-685.112463
Energy at 298.15K-685.112541
HF Energy-685.057317
Nuclear repulsion energy69.800152
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/STO-3G
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 2090 2.89      
2 A' 425 425 69.43      
3 A' 272 272 0.91      

Unscaled Zero Point Vibrational Energy (zpe) 1393.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1393.2 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 B2PLYP/STO-3G
ABC
1.75916 0.17839 0.16196

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.000 0.000
C2 0.656 -1.447 0.000
N3 -0.562 -1.474 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.53332.5371
C22.53331.2181
N32.53711.2181

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 76.274 K1 N3 C2 75.925
C2 K1 N3 27.800
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.538      
2 C -0.184      
3 N -0.354      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.432 8.419 0.000 8.430
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.136 0.046 0.000
y 0.046 -22.016 0.000
z 0.000 0.000 -21.348
Traceless
 xyz
x -3.454 0.046 0.000
y 0.046 1.226 0.000
z 0.000 0.000 2.227
Polar
3z2-r24.455
x2-y2-3.120
xy0.046
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.096 -0.165 0.000
y -0.165 3.722 0.000
z 0.000 0.000 1.535


<r2> (average value of r2) Å2
<r2> 65.825
(<r2>)1/2 8.113