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

using model chemistry: PBEPBEultrafine/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 PBEPBEultrafine/TZVP
 hartrees
Energy at 0K-692.474144
Energy at 298.15K-692.473570
HF Energy-692.474144
Nuclear repulsion energy59.719183
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 PBEPBEultrafine/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 2128 2104 0.40      
2 Σ 263 260 49.85      
3 Π 97 96 15.43      
3 Π 97 96 15.43      

Unscaled Zero Point Vibrational Energy (zpe) 1292.7 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 1277.9 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 PBEPBEultrafine/TZVP
B
0.09380

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.344
C2 0.000 0.000 -1.332
N3 0.000 0.000 -2.507

Atom - Atom Distances (Å)
  K1 C2 N3
K12.67603.8517
C22.67601.1757
N33.85171.1757

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 PBEPBEultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.866      
2 C -0.619      
3 N -0.247      


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 12.849 12.849
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.518 0.000 0.000
y 0.000 -23.518 0.000
z 0.000 0.000 -30.498
Traceless
 xyz
x 3.490 0.000 0.000
y 0.000 3.490 0.000
z 0.000 0.000 -6.980
Polar
3z2-r2-13.961
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 3.347 0.000 0.000
y 0.000 3.347 0.000
z 0.000 0.000 8.980


<r2> (average value of r2) Å2
<r2> 105.129
(<r2>)1/2 10.253

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at PBEPBEultrafine/TZVP
 hartrees
Energy at 0K-692.474689
Energy at 298.15K-692.474029
HF Energy-692.474689
Nuclear repulsion energy62.890133
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 PBEPBEultrafine/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 2081 2057 63.30      
2 Σ 292 289 55.73      
3 Π 64 63 3.88      
3 Π 64 63 3.88      

Unscaled Zero Point Vibrational Energy (zpe) 1250.2 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 1235.9 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 PBEPBEultrafine/TZVP
B
0.10781

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.249
C2 0.000 0.000 -2.462
N3 0.000 0.000 -1.279

Atom - Atom Distances (Å)
  K1 C2 N3
K13.71062.5277
C23.71061.1830
N32.52771.1830

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 PBEPBEultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.881      
2 C -0.414      
3 N -0.467      


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 13.028 13.028
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.380 0.000 0.000
y 0.000 -23.380 0.000
z 0.000 0.000 -33.362
Traceless
 xyz
x 4.991 0.000 0.000
y 0.000 4.991 0.000
z 0.000 0.000 -9.982
Polar
3z2-r2-19.963
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 3.156 0.000 0.000
y 0.000 3.156 0.000
z 0.000 0.000 9.715


<r2> (average value of r2) Å2
<r2> 94.123
(<r2>)1/2 9.702

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at PBEPBEultrafine/TZVP
 hartrees
Energy at 0K-692.477346
Energy at 298.15K-692.477170
HF Energy-692.477346
Nuclear repulsion energy66.814701
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 PBEPBEultrafine/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' 2064 2041 15.05      
2 A' 273 270 54.25      
3 A' 156 154 3.43      

Unscaled Zero Point Vibrational Energy (zpe) 1246.7 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 1232.5 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 PBEPBEultrafine/TZVP
ABC
1.88250 0.15274 0.14128

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.080 0.000
C2 0.634 -1.640 0.000
N3 -0.544 -1.527 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.79282.6632
C22.79281.1830
N32.66321.1830

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 71.411 K1 N3 C2 83.689
C2 K1 N3 24.900
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.811      
2 C -0.438      
3 N -0.373      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.478 11.090 0.000 11.101
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.984 0.817 0.000
y 0.817 -26.585 0.000
z 0.000 0.000 -23.658
Traceless
 xyz
x -2.863 0.817 0.000
y 0.817 -0.764 0.000
z 0.000 0.000 3.626
Polar
3z2-r27.253
x2-y2-1.399
xy0.817
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.836 -0.259 0.000
y -0.259 5.210 0.000
z 0.000 0.000 3.383


<r2> (average value of r2) Å2
<r2> 75.389
(<r2>)1/2 8.683