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

using model chemistry: B2PLYP=FULLultrafine/6-311G*

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 B2PLYP=FULLultrafine/6-311G*
 hartrees
Energy at 0K-692.614970
Energy at 298.15K 
HF Energy-692.418234
Nuclear repulsion energy60.950750
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 B2PLYP=FULLultrafine/6-311G*
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 2135 2135 6.49      
2 Σ 287 287 63.79      
3 Π 77 77 11.35      
3 Π 77 77 11.35      

Unscaled Zero Point Vibrational Energy (zpe) 1287.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1287.9 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 B2PLYP=FULLultrafine/6-311G*
B
0.09874

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.309
C2 0.000 0.000 -1.281
N3 0.000 0.000 -2.454

Atom - Atom Distances (Å)
  K1 C2 N3
K12.58983.7626
C22.58981.1727
N33.76261.1727

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

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at B2PLYP=FULLultrafine/6-311G*
 hartrees
Energy at 0K-692.616954
Energy at 298.15K 
HF Energy-692.423172
Nuclear repulsion energy64.418842
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 B2PLYP=FULLultrafine/6-311G*
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 2091 2091 91.71      
2 Σ 321 321 78.73      
3 Π 52i 52i 1.78      
3 Π 52i 52i 1.78      

Unscaled Zero Point Vibrational Energy (zpe) 1153.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1153.8 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 B2PLYP=FULLultrafine/6-311G*
B
0.11432

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.211
C2 0.000 0.000 -2.405
N3 0.000 0.000 -1.224

Atom - Atom Distances (Å)
  K1 C2 N3
K13.61542.4349
C23.61541.1804
N32.43491.1804

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

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at B2PLYP=FULLultrafine/6-311G*
 hartrees
Energy at 0K-692.622062
Energy at 298.15K 
HF Energy-692.425898
Nuclear repulsion energy68.655661
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 B2PLYP=FULLultrafine/6-311G*
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' 2067 2067 15.28      
2 A' 309 309 67.90      
3 A' 171 171 7.28      

Unscaled Zero Point Vibrational Energy (zpe) 1273.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1273.6 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 B2PLYP=FULLultrafine/6-311G*
ABC
1.91399 0.16452 0.15150

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.040 0.000
C2 0.629 -1.613 0.000
N3 -0.539 -1.441 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.72692.5391
C22.72691.1813
N32.53911.1813

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 68.278 K1 N3 C2 86.116
C2 K1 N3 25.606
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability