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

using model chemistry: B3PW91/TZVP

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 B3PW91/TZVP
 hartrees
Energy at 0K-692.719144
Energy at 298.15K-692.718543
HF Energy-692.719144
Nuclear repulsion energy59.948202
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 B3PW91/TZVP
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 2211 2132 0.00      
2 Σ 260 251 55.37      
3 Π 91 87 14.97      
3 Π 91 87 14.97      

Unscaled Zero Point Vibrational Energy (zpe) 1326.5 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 1279.1 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 B3PW91/TZVP
B
0.09420

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.342
C2 0.000 0.000 -1.334
N3 0.000 0.000 -2.499

Atom - Atom Distances (Å)
  K1 C2 N3
K12.67623.8409
C22.67621.1647
N33.84091.1647

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 B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.919      
2 C -0.627      
3 N -0.292      


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 13.303 13.303
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.119 0.000 0.000
y 0.000 -23.119 0.000
z 0.000 0.000 -30.604
Traceless
 xyz
x 3.742 0.000 0.000
y 0.000 3.742 0.000
z 0.000 0.000 -7.485
Polar
3z2-r2-14.969
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 2.788 0.000 0.001
y 0.000 2.788 -0.000
z 0.001 -0.000 6.151


<r2> (average value of r2) Å2
<r2> 104.610
(<r2>)1/2 10.228

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at B3PW91/TZVP
 hartrees
Energy at 0K-692.721323
Energy at 298.15K-692.720687
HF Energy-692.721323
Nuclear repulsion energy63.205805
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 B3PW91/TZVP
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 2160 2083 80.69      
2 Σ 297 287 65.34      
3 Π 68 66 4.33      
3 Π 68 66 4.33      

Unscaled Zero Point Vibrational Energy (zpe) 1296.9 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 1250.6 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 B3PW91/TZVP
B
0.10866

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.244
C2 0.000 0.000 -2.450
N3 0.000 0.000 -1.277

Atom - Atom Distances (Å)
  K1 C2 N3
K13.69362.5214
C23.69361.1722
N32.52141.1722

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 B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.926      
2 C -0.401      
3 N -0.525      


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 13.307 13.307
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.979 0.000 0.000
y 0.000 -22.979 0.000
z 0.000 0.000 -33.152
Traceless
 xyz
x 5.086 0.000 0.000
y 0.000 5.086 0.000
z 0.000 0.000 -10.173
Polar
3z2-r2-20.345
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 2.647 0.000 0.000
y 0.000 2.647 0.000
z 0.000 0.000 5.843


<r2> (average value of r2) Å2
<r2> 93.301
(<r2>)1/2 9.659

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at B3PW91/TZVP
 hartrees
Energy at 0K-692.722792
Energy at 298.15K-692.722593
HF Energy-692.722792
Nuclear repulsion energy66.989676
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 B3PW91/TZVP
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' 2148 2071 22.64      
2 A' 276 266 55.85      
3 A' 140 135 6.22      

Unscaled Zero Point Vibrational Energy (zpe) 1281.7 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 1236.0 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 B3PW91/TZVP
ABC
1.94045 0.15220 0.14113

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.082 0.000
C2 0.625 -1.669 0.000
N3 -0.536 -1.506 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.82052.6425
C22.82051.1718
N32.64251.1718

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 69.220 K1 N3 C2 86.287
C2 K1 N3 24.493
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.867      
2 C -0.439      
3 N -0.428      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.403 11.421 0.000 11.428
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.589 0.951 0.000
y 0.951 -26.676 0.000
z 0.000 0.000 -23.233
Traceless
 xyz
x -2.634 0.951 0.000
y 0.951 -1.265 0.000
z 0.000 0.000 3.899
Polar
3z2-r27.799
x2-y2-0.913
xy0.951
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.381 -0.248 0.000
y -0.248 3.830 0.000
z 0.000 0.000 2.916


<r2> (average value of r2) Å2
<r2> 75.300
(<r2>)1/2 8.678