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

using model chemistry: B2PLYP=FULLultrafine/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 no C*V 1Σ
1 2 yes C*V 1Σ
1 3 no CS 1A'

Conformer 1 (C*V)

Jump to S1C2 S1C3
Energy calculated at B2PLYP=FULLultrafine/6-31G
 hartrees
Energy at 0K-692.391633
Energy at 298.15K 
HF Energy-692.313968
Nuclear repulsion energy59.914364
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/6-31G
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 2058 2058 2.00      
2 Σ 283 283 49.31      
3 Π 108 108 15.50      
3 Π 108 108 15.50      

Unscaled Zero Point Vibrational Energy (zpe) 1278.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1278.1 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/6-31G
B
0.09558

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.330
C2 0.000 0.000 -1.299
N3 0.000 0.000 -2.496

Atom - Atom Distances (Å)
  K1 C2 N3
K12.62903.8258
C22.62901.1967
N33.82581.1967

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/6-31G
 hartrees
Energy at 0K-692.391705
Energy at 298.15K 
HF Energy-692.317934
Nuclear repulsion energy63.210993
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/6-31G
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 2025 2025 55.36      
2 Σ 316 316 57.06      
3 Π 47 47 5.26      
3 Π 47 47 5.26      

Unscaled Zero Point Vibrational Energy (zpe) 1217.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1217.5 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/6-31G
B
0.11007

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.234
C2 0.000 0.000 -2.451
N3 0.000 0.000 -1.248

Atom - Atom Distances (Å)
  K1 C2 N3
K13.68442.4813
C23.68441.2031
N32.48131.2031

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/6-31G
 hartrees
Energy at 0K-692.393578
Energy at 298.15K 
HF Energy-692.316722
Nuclear repulsion energy66.641246
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/6-31G
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' 1980 1980 11.74      
2 A' 287 287 50.48      
3 A' 135 135 4.00      

Unscaled Zero Point Vibrational Energy (zpe) 1200.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1200.5 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/6-31G
ABC
1.83360 0.15380 0.14189

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.076 0.000
C2 0.643 -1.663 0.000
N3 -0.551 -1.495 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.81352.6296
C22.81351.2056
N32.62961.2056

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 68.787 K1 N3 C2 85.910
C2 K1 N3 25.303
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability