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

using model chemistry: B2PLYP=FULLultrafine/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.667374
Energy at 298.15K 
HF Energy-692.430573
Nuclear repulsion energy60.938886
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/6-311+G(3df,2p)
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 2128 3.06      
2 Σ 280 280 68.79      
3 Π 84 84 7.30      
3 Π 84 84 7.30      

Unscaled Zero Point Vibrational Energy (zpe) 1288.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1288.1 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 B2PLYP=FULLultrafine/6-311+G(3df,2p)
B
0.09856

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311+G(3df,2p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.310
C2 0.000 0.000 -1.285
N3 0.000 0.000 -2.455

Atom - Atom Distances (Å)
  K1 C2 N3
K12.59483.7648
C22.59481.1700
N33.76481.1700

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.669624
Energy at 298.15K 
HF Energy-692.435456
Nuclear repulsion energy64.428874
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/6-311+G(3df,2p)
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 2085 2085 98.91      
2 Σ 311 311 84.11      
3 Π 28i 28i 1.15      
3 Π 28i 28i 1.15      

Unscaled Zero Point Vibrational Energy (zpe) 1170.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1170.1 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 B2PLYP=FULLultrafine/6-311+G(3df,2p)
B
0.11421

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311+G(3df,2p)

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 -2.404
N3 0.000 0.000 -1.227

Atom - Atom Distances (Å)
  K1 C2 N3
K13.61562.4384
C23.61561.1772
N32.43841.1772

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.673163
Energy at 298.15K 
HF Energy-692.437451
Nuclear repulsion energy68.515849
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/6-311+G(3df,2p)
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 19.00      
2 A' 299 299 70.04      
3 A' 152 152 8.63      

Unscaled Zero Point Vibrational Energy (zpe) 1258.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1258.9 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/6-311+G(3df,2p)
ABC
1.93699 0.16287 0.15023

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.045 0.000
C2 0.626 -1.630 0.000
N3 -0.536 -1.441 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.74712.5431
C22.74711.1772
N32.54311.1772

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 67.596 K1 N3 C2 87.066
C2 K1 N3 25.338
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability