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

using model chemistry: HF/6-31G(2df,p)

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 HF/6-31G(2df,p)
 hartrees
Energy at 0K-691.451526
Energy at 298.15K-691.450728
HF Energy-691.451526
Nuclear repulsion energy60.768741
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 HF/6-31G(2df,p)
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 2421 2193 0.24      
2 Σ 280 254 64.94      
3 Π 32 29 7.73      
3 Π 32 29 7.73      

Unscaled Zero Point Vibrational Energy (zpe) 1382.5 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 1251.8 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 HF/6-31G(2df,p)
B
0.09662

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.325
C2 0.000 0.000 -1.320
N3 0.000 0.000 -2.466

Atom - Atom Distances (Å)
  K1 C2 N3
K12.64563.7911
C22.64561.1456
N33.79111.1456

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 HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.725      
2 C -0.505      
3 N -0.220      


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 12.809 12.809
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.643 0.000 0.000
y 0.000 -22.643 0.000
z 0.000 0.000 -30.995
Traceless
 xyz
x 4.176 0.000 0.000
y 0.000 4.176 0.000
z 0.000 0.000 -8.352
Polar
3z2-r2-16.703
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 2.898 0.000 0.000
y 0.000 2.898 0.000
z 0.000 0.000 5.152


<r2> (average value of r2) Å2
<r2> 102.274
(<r2>)1/2 10.113

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-691.458560
Energy at 298.15K 
HF Energy-691.458560
Nuclear repulsion energy64.587176
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 HF/6-31G(2df,p)
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 2332 2112 171.08      
2 Σ 328 297 80.95      
3 Π 74i 67i 2.17      
3 Π 74i 67i 2.17      

Unscaled Zero Point Vibrational Energy (zpe) 1256.1 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 1137.4 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 HF/6-31G(2df,p)
B
0.11393

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.214
C2 0.000 0.000 -2.397
N3 0.000 0.000 -1.241

Atom - Atom Distances (Å)
  K1 C2 N3
K13.61172.4553
C23.61171.1564
N32.45531.1564

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 HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.765      
2 C -0.355      
3 N -0.410      


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 12.101 12.101
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.577 0.000 0.000
y 0.000 -22.577 0.000
z 0.000 0.000 -31.888
Traceless
 xyz
x 4.655 0.000 0.000
y 0.000 4.655 0.000
z 0.000 0.000 -9.311
Polar
3z2-r2-18.621
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 2.866 0.000 0.000
y 0.000 2.866 0.000
z 0.000 0.000 5.032


<r2> (average value of r2) Å2
<r2> 89.320
(<r2>)1/2 9.451

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at HF/6-31G(2df,p)
 hartrees
Energy at 0K-691.462565
Energy at 298.15K-691.462417
HF Energy-691.462565
Nuclear repulsion energy68.123283
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 HF/6-31G(2df,p)
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' 2327 2107 52.97      
2 A' 311 281 64.32      
3 A' 146 132 7.72      

Unscaled Zero Point Vibrational Energy (zpe) 1391.6 cm-1
Scaled (by 0.9055) Zero Point Vibrational Energy (zpe) 1260.1 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 HF/6-31G(2df,p)
ABC
2.05394 0.15687 0.14574

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.064 0.000
C2 0.608 -1.689 0.000
N3 -0.521 -1.441 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.81962.5589
C22.81961.1561
N32.55891.1561

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 65.163 K1 N3 C2 90.631
C2 K1 N3 24.206
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.701      
2 C -0.327      
3 N -0.374      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.258 10.496 0.000 10.499
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.735 0.991 0.000
y 0.991 -26.256 0.000
z 0.000 0.000 -22.844
Traceless
 xyz
x -2.185 0.991 0.000
y 0.991 -1.467 0.000
z 0.000 0.000 3.652
Polar
3z2-r27.304
x2-y2-0.479
xy0.991
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.929 -0.234 0.000
y -0.234 3.795 0.000
z 0.000 0.000 2.982


<r2> (average value of r2) Å2
<r2> 73.080
(<r2>)1/2 8.549