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

using model chemistry: B3LYP/STO-3G

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 B3LYP/STO-3G
 hartrees
Energy at 0K-685.408800
Energy at 298.15K-685.408480
HF Energy-685.408800
Nuclear repulsion energy61.079292
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 B3LYP/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 2261 2018 49.73      
2 Σ 359 320 28.75      
3 Π 167 149 7.76      
3 Π 167 149 7.76      

Unscaled Zero Point Vibrational Energy (zpe) 1477.3 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 1318.3 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 B3LYP/STO-3G
B
0.10051

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.295
C2 0.000 0.000 -1.246
N3 0.000 0.000 -2.446

Atom - Atom Distances (Å)
  K1 C2 N3
K12.54113.7408
C22.54111.1998
N33.74081.1998

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 B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.463      
2 C -0.147      
3 N -0.316      


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 9.643 9.643
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.475 0.000 0.000
y 0.000 -21.475 0.000
z 0.000 0.000 -26.367
Traceless
 xyz
x 2.446 0.000 0.000
y 0.000 2.446 0.000
z 0.000 0.000 -4.892
Polar
3z2-r2-9.784
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 1.758 0.000 0.000
y 0.000 1.758 0.000
z 0.000 0.000 8.048


<r2> (average value of r2) Å2
<r2> 97.486
(<r2>)1/2 9.874

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at B3LYP/STO-3G
 hartrees
Energy at 0K-685.396661
Energy at 298.15K-685.396022
HF Energy-685.396661
Nuclear repulsion energy63.820972
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 B3LYP/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 2186 1950 95.87      
2 Σ 367 328 21.58      
3 Π 64 57 5.26      
3 Π 64 57 5.26      

Unscaled Zero Point Vibrational Energy (zpe) 1340.3 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 1196.1 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 B3LYP/STO-3G
B
0.11292

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.217
C2 0.000 0.000 -2.429
N3 0.000 0.000 -1.220

Atom - Atom Distances (Å)
  K1 C2 N3
K13.64542.4369
C23.64541.2084
N32.43691.2084

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 B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.528      
2 C -0.147      
3 N -0.381      


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 9.610 9.610
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.235 0.000 0.000
y 0.000 -21.235 0.000
z 0.000 0.000 -27.768
Traceless
 xyz
x 3.266 0.000 0.000
y 0.000 3.266 0.000
z 0.000 0.000 -6.532
Polar
3z2-r2-13.065
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 1.664 0.000 0.000
y 0.000 1.664 0.000
z 0.000 0.000 11.145


<r2> (average value of r2) Å2
<r2> 88.564
(<r2>)1/2 9.411

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at B3LYP/STO-3G
 hartrees
Energy at 0K-685.409830
Energy at 298.15K-685.409873
HF Energy-685.409830
Nuclear repulsion energy69.621032
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 B3LYP/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' 2083 1859 37.26      
2 A' 395 353 38.92      
3 A' 267 238 0.21      

Unscaled Zero Point Vibrational Energy (zpe) 1372.5 cm-1
Scaled (by 0.8924) Zero Point Vibrational Energy (zpe) 1224.8 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 B3LYP/STO-3G
ABC
1.76232 0.17689 0.16076

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.004 0.000
C2 0.655 -1.468 0.000
N3 -0.562 -1.468 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.55752.5349
C22.55751.2167
N32.53491.2167

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 75.146 K1 N3 C2 77.214
C2 K1 N3 27.641
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.499      
2 C -0.155      
3 N -0.344      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.326 7.909 0.000 7.916
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.126 0.055 0.000
y 0.055 -22.101 0.000
z 0.000 0.000 -21.411
Traceless
 xyz
x -3.370 0.055 0.000
y 0.055 1.168 0.000
z 0.000 0.000 2.203
Polar
3z2-r24.405
x2-y2-3.025
xy0.055
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.190 -0.235 0.000
y -0.235 4.927 0.000
z 0.000 0.000 1.602


<r2> (average value of r2) Å2
<r2> 66.240
(<r2>)1/2 8.139