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

using model chemistry: B2PLYP=FULL/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=FULL/6-311G*
 hartrees
Energy at 0K-692.614997
Energy at 298.15K-692.614363
HF Energy-692.418257
Nuclear repulsion energy60.978815
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=FULL/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 6.51      
2 Σ 286 286 63.81      
3 Π 73 73 11.35      
3 Π 73 73 11.35      

Unscaled Zero Point Vibrational Energy (zpe) 1283.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1283.7 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=FULL/6-311G*
B
0.09886

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.308
C2 0.000 0.000 -1.280
N3 0.000 0.000 -2.453

Atom - Atom Distances (Å)
  K1 C2 N3
K12.58783.7606
C22.58781.1727
N33.76061.1727

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=FULL/6-311G*
 hartrees
Energy at 0K-692.616973
Energy at 298.15K 
HF Energy-692.423192
Nuclear repulsion energy64.413908
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=FULL/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 91.63      
2 Σ 321 321 78.69      
3 Π 57i 57i 1.78      
3 Π 57i 57i 1.78      

Unscaled Zero Point Vibrational Energy (zpe) 1149.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1149.5 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=FULL/6-311G*
B
0.11429

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/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 -1.225

Atom - Atom Distances (Å)
  K1 C2 N3
K13.61572.4352
C23.61571.1804
N32.43521.1804

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=FULL/6-311G*
 hartrees
Energy at 0K-692.622106
Energy at 298.15K-692.621996
HF Energy-692.425940
Nuclear repulsion energy68.664029
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=FULL/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 15.29      
2 A' 310 310 67.73      
3 A' 171 171 7.48      

Unscaled Zero Point Vibrational Energy (zpe) 1274.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1274.0 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 B2PLYP=FULL/6-311G*
ABC
1.91410 0.16458 0.15155

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/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
K12.72662.5386
C22.72661.1813
N32.53861.1813

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 68.266 K1 N3 C2 86.124
C2 K1 N3 25.610
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability