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

using model chemistry: G2

19 10 17 12 22

States and conformations

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

Conformer 1 (C*V)

Jump to S1C2 S1C3
Energy calculated at G2
 hartrees
Energy at 0K-692.165435
Energy at 298.15K-692.160057
HF Energy-691.443455
Nuclear repulsion energy60.445951
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 HF/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 2438 2297 1.36      
2 Σ 286 269 62.05      
3 Π 72 68 8.49      
3 Π 72 68 8.49      

Unscaled Zero Point Vibrational Energy (zpe) 1434.1 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 1351.2 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 MP2=FULL/6-31G*
B
0.09632

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.325
C2 0.000 0.000 -1.295
N3 0.000 0.000 -2.486

Atom - Atom Distances (Å)
  K1 C2 N3
K12.61943.8110
C22.61941.1915
N33.81101.1915

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 G2
 hartrees
Energy at 0K-692.165435
Energy at 298.15K-692.160057
HF Energy-691.443455
Nuclear repulsion energy60.445951
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 HF/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 2354 2218 144.54      
2 Σ 326 307 75.63      
3 Π 63i 60i 4.33      
3 Π 63i 60i 4.33      

Unscaled Zero Point Vibrational Energy (zpe) 1276.6 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 1202.8 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 MP2=FULL/6-31G*
B
0.11095

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.229
C2 0.000 0.000 -2.440
N3 0.000 0.000 -1.244

Atom - Atom Distances (Å)
  K1 C2 N3
K13.66892.4732
C23.66891.1956
N32.47321.1956

picture of Potassium cyanide state 1 conformation 2
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at G2
 hartrees
Energy at 0K-692.171735
Energy at 298.15K-692.171648
HF Energy-691.452045
Nuclear repulsion energy67.724137
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 HF/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' 2347 2212 48.14      
2 A' 308 291 62.53      
3 A' 148 139 6.82      

Unscaled Zero Point Vibrational Energy (zpe) 1401.6 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 1320.6 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 MP2=FULL/6-31G*
ABC
1.82215 0.16269 0.14936

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.047 0.000
C2 0.644 -1.567 0.000
N3 -0.552 -1.499 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.69232.6048
C22.69231.1987
N32.60481.1987

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 65.784 K1 N3 C2 90.018
C2 K1 N3 24.198
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability