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

using model chemistry: CCD/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 CCD/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.093944
Energy at 298.15K-692.093332
HF Energy-691.511667
Nuclear repulsion energy60.703858
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 CCD/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 2200 2075 0.89      
2 Σ 277 261 68.01      
3 Π 81 77 7.58      
3 Π 81 77 7.58      

Unscaled Zero Point Vibrational Energy (zpe) 1319.9 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 1244.8 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 CCD/6-311+G(3df,2p)
B
0.09741

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.318
C2 0.000 0.000 -1.299
N3 0.000 0.000 -2.465

Atom - Atom Distances (Å)
  K1 C2 N3
K12.61723.7837
C22.61721.1665
N33.78371.1665

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 CCD/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.096929
Energy at 298.15K 
HF Energy-691.518848
Nuclear repulsion energy64.227003
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 CCD/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 2154 2031 102.17      
2 Σ 310 292 83.41      
3 Π 48i 46i 1.34      
3 Π 48i 46i 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 1183.4 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 1116.0 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 CCD/6-311+G(3df,2p)
B
0.11317

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.218
C2 0.000 0.000 -2.411
N3 0.000 0.000 -1.238

Atom - Atom Distances (Å)
  K1 C2 N3
K13.62892.4553
C23.62891.1736
N32.45531.1736

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 CCD/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.100789
Energy at 298.15K-692.100649
HF Energy-691.519626
Nuclear repulsion energy68.357127
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 CCD/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' 2137 2016 22.61      
2 A' 300 283 68.88      
3 A' 157 148 8.82      

Unscaled Zero Point Vibrational Energy (zpe) 1297.3 cm-1
Scaled (by 0.9431) Zero Point Vibrational Energy (zpe) 1223.4 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 CCD/6-311+G(3df,2p)
ABC
1.95183 0.16130 0.14899

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.050 0.000
C2 0.623 -1.640 0.000
N3 -0.534 -1.445 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.76152.5522
C22.76151.1738
N32.55221.1738

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 67.412 K1 N3 C2 87.460
C2 K1 N3 25.128
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability