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

using model chemistry: MP4/TZVP

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 MP4/TZVP
 hartrees
Energy at 0K-691.827107
Energy at 298.15K-691.826473
HF Energy-691.505569
Nuclear repulsion energy58.727447
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 MP4/TZVP
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 2029 1953        
2 Σ 256 246        
3 Π 83 80        
3 Π 83 80        

Unscaled Zero Point Vibrational Energy (zpe) 1225.3 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 1179.9 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 MP4/TZVP
B
0.09023

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.372
C2 0.000 0.000 -1.367
N3 0.000 0.000 -2.551

Atom - Atom Distances (Å)
  K1 C2 N3
K12.73813.9230
C22.73811.1849
N33.92301.1849

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 MP4/TZVP
 hartrees
Energy at 0K-691.827997
Energy at 298.15K-691.827300
HF Energy-691.513383
Nuclear repulsion energy61.705429
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 MP4/TZVP
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 2050 1974        
2 Σ 286 275        
3 Π 56 54        
3 Π 56 54        

Unscaled Zero Point Vibrational Energy (zpe) 1223.6 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 1178.3 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 MP4/TZVP
B
0.10299

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.279
C2 0.000 0.000 -2.509
N3 0.000 0.000 -1.321

Atom - Atom Distances (Å)
  K1 C2 N3
K13.78782.5999
C23.78781.1879
N32.59991.1879

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 MP4/TZVP
 hartrees
Energy at 0K-691.829993
Energy at 298.15K-691.829795
HF Energy-691.511426
Nuclear repulsion energy65.393572
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 MP4/TZVP
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' 2022 1947        
2 A' 265 255        
3 A' 149 143        

Unscaled Zero Point Vibrational Energy (zpe) 1218.0 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 1172.8 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 MP4/TZVP
ABC
1.86273 0.14410 0.13375

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.112 0.000
C2 0.637 -1.680 0.000
N3 -0.546 -1.579 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.86422.7464
C22.86421.1880
N32.74641.1880

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 72.274 K1 N3 C2 83.392
C2 K1 N3 24.333
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability