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

using model chemistry: MP2/CEP-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

Conformer 1 (C*V)

Jump to S1C2
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-15.462086
Energy at 298.15K-15.461454
HF Energy-15.261580
Nuclear repulsion energy9.932165
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 MP2/CEP-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 1808 1747 5.71      
2 Σ 239 231 46.65      
3 Π 92 89 16.84      
3 Π 92 89 16.84      

Unscaled Zero Point Vibrational Energy (zpe) 1115.4 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 1077.8 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/CEP-31G
B
0.08776

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.388
C2 0.000 0.000 -1.358
N3 0.000 0.000 -2.603

Atom - Atom Distances (Å)
  K1 C2 N3
K12.74613.9915
C22.74611.2453
N33.99151.2453

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
Energy calculated at MP2/CEP-31G
 hartrees
Energy at 0K-15.462099
Energy at 298.15K-15.461374
HF Energy-15.273542
Nuclear repulsion energy10.047961
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 MP2/CEP-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 1822 1761 29.57      
2 Σ 269 260 60.69      
3 Π 56 54 3.80      
3 Π 56 54 3.80      

Unscaled Zero Point Vibrational Energy (zpe) 1101.4 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 1064.3 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/CEP-31G
B
0.10078

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.290
C2 0.000 0.000 -2.557
N3 0.000 0.000 -1.309

Atom - Atom Distances (Å)
  K1 C2 N3
K13.84712.5990
C23.84711.2481
N32.59901.2481

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