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

using model chemistry: BLYP/6-31+G**

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 BLYP/6-31+G**
 hartrees
Energy at 0K-692.727311
Energy at 298.15K-692.726711
HF Energy-692.727311
Nuclear repulsion energy59.873210
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 BLYP/6-31+G**
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 2102 2091 0.06      
2 Σ 265 264 55.60      
3 Π 90 89 10.46      
3 Π 90 89 10.46      

Unscaled Zero Point Vibrational Energy (zpe) 1273.6 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 1266.9 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 BLYP/6-31+G**
B
0.09496

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.335
C2 0.000 0.000 -1.312
N3 0.000 0.000 -2.499

Atom - Atom Distances (Å)
  K1 C2 N3
K12.64703.8339
C22.64701.1869
N33.83391.1869

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 BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.982      
2 C -0.656      
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 12.521 12.521
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.876 0.000 0.000
y 0.000 -23.876 0.000
z 0.000 0.000 -32.378
Traceless
 xyz
x 4.251 0.000 0.000
y 0.000 4.251 0.000
z 0.000 0.000 -8.502
Polar
3z2-r2-17.004
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 3.896 0.000 0.000
y 0.000 3.896 0.000
z 0.000 0.000 9.657


<r2> (average value of r2) Å2
<r2> 104.585
(<r2>)1/2 10.227

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-692.729141
Energy at 298.15K-692.728474
HF Energy-692.729141
Nuclear repulsion energy63.127676
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 BLYP/6-31+G**
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 2048 2038 83.75      
2 Σ 299 297 64.67      
3 Π 60 60 3.44      
3 Π 60 60 3.44      

Unscaled Zero Point Vibrational Energy (zpe) 1233.9 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 1227.4 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 BLYP/6-31+G**
B
0.10935

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.238
C2 0.000 0.000 -2.453
N3 0.000 0.000 -1.259

Atom - Atom Distances (Å)
  K1 C2 N3
K13.69192.4971
C23.69191.1947
N32.49711.1947

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 BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.903      
2 C -0.316      
3 N -0.587      


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 12.443 12.443
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.812 0.000 0.000
y 0.000 -23.812 0.000
z 0.000 0.000 -34.247
Traceless
 xyz
x 5.218 0.000 0.000
y 0.000 5.218 0.000
z 0.000 0.000 -10.435
Polar
3z2-r2-20.871
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 3.900 0.000 0.000
y 0.000 3.900 -0.000
z 0.000 -0.000 10.029


<r2> (average value of r2) Å2
<r2> 93.392
(<r2>)1/2 9.664

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at BLYP/6-31+G**
 hartrees
Energy at 0K-692.730976
Energy at 298.15K-692.730804
HF Energy-692.730976
Nuclear repulsion energy67.241299
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 BLYP/6-31+G**
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' 2036 2025 21.61      
2 A' 284 283 62.62      
3 A' 152 151 6.41      

Unscaled Zero Point Vibrational Energy (zpe) 1236.0 cm-1
Scaled (by 0.9947) Zero Point Vibrational Energy (zpe) 1229.5 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 BLYP/6-31+G**
ABC
1.86568 0.15656 0.14444

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.067 0.000
C2 0.637 -1.645 0.000
N3 -0.546 -1.485 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.78522.6097
C22.78521.1941
N32.60971.1941

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 69.102 K1 N3 C2 85.590
C2 K1 N3 25.308
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.895      
2 C -0.485      
3 N -0.409      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.388 10.526 0.000 10.533
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.223 0.882 0.000
y 0.882 -27.530 0.000
z 0.000 0.000 -23.840
Traceless
 xyz
x -2.538 0.882 0.000
y 0.882 -1.498 0.000
z 0.000 0.000 4.036
Polar
3z2-r28.072
x2-y2-0.693
xy0.882
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.731 -0.343 0.000
y -0.343 6.278 0.000
z 0.000 0.000 4.176


<r2> (average value of r2) Å2
<r2> 74.382
(<r2>)1/2 8.625