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

using model chemistry: B2PLYP=FULLultrafine/3-21G

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/3-21G
 hartrees
Energy at 0K-688.931576
Energy at 298.15K 
HF Energy-688.855343
Nuclear repulsion energy60.417075
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/3-21G
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 2075 2075 6.86      
2 Σ 280 280 44.07      
3 Π 103 103 19.44      
3 Π 103 103 19.44      

Unscaled Zero Point Vibrational Energy (zpe) 1280.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1280.4 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 B2PLYP=FULLultrafine/3-21G
B
0.09722

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.318
C2 0.000 0.000 -1.288
N3 0.000 0.000 -2.475

Atom - Atom Distances (Å)
  K1 C2 N3
K12.60613.7936
C22.60611.1875
N33.79361.1875

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/3-21G
 hartrees
Energy at 0K-688.932601
Energy at 298.15K 
HF Energy-688.859646
Nuclear repulsion energy63.742956
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/3-21G
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 2044 2044 51.07      
2 Σ 309 309 49.49      
3 Π 48i 48i 3.21      
3 Π 48i 48i 3.21      

Unscaled Zero Point Vibrational Energy (zpe) 1128.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1128.5 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 B2PLYP=FULLultrafine/3-21G
B
0.11196

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.223
C2 0.000 0.000 -2.430
N3 0.000 0.000 -1.237

Atom - Atom Distances (Å)
  K1 C2 N3
K13.65352.4599
C23.65351.1936
N32.45991.1936

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/3-21G
 hartrees
Energy at 0K-688.937321
Energy at 298.15K 
HF Energy-688.861333
Nuclear repulsion energy67.423731
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/3-21G
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' 1988 1988 6.79      
2 A' 294 294 45.04      
3 A' 157 157 4.83      

Unscaled Zero Point Vibrational Energy (zpe) 1219.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1219.4 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 B2PLYP=FULLultrafine/3-21G
ABC
1.85210 0.15827 0.14581

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.061 0.000
C2 0.640 -1.634 0.000
N3 -0.548 -1.479 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.76992.5979
C22.76991.1979
N32.59791.1979

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 69.186 K1 N3 C2 85.283
C2 K1 N3 25.531
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability