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

using model chemistry: MP4=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 MP4=FULL/6-311G**
 hartrees
Energy at 0K-692.145750
Energy at 298.15K-692.145121
HF Energy-691.496250
Nuclear repulsion energy60.443871
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=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 2015 1937        
2 Σ 285 274        
3 Π 74 71        
3 Π 74 71        

Unscaled Zero Point Vibrational Energy (zpe) 1224.3 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 1177.1 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 MP4=FULL/6-311G**
B
0.09735

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.318
C2 0.000 0.000 -1.286
N3 0.000 0.000 -2.474

Atom - Atom Distances (Å)
  K1 C2 N3
K12.60383.7914
C22.60381.1876
N33.79141.1876

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=FULL/6-311G**
 hartrees
Energy at 0K-692.147035
Energy at 298.15K 
HF Energy-691.504112
Nuclear repulsion energy63.859884
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=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 1975 1899        
2 Σ 319 307        
3 Π 63i 61i        
3 Π 63i 61i        

Unscaled Zero Point Vibrational Energy (zpe) 1083.8 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 1042.1 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 MP4=FULL/6-311G**
B
0.11251

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.220
C2 0.000 0.000 -2.426
N3 0.000 0.000 -1.232

Atom - Atom Distances (Å)
  K1 C2 N3
K13.64612.4515
C23.64611.1946
N32.45151.1946

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=FULL/6-311G**
 hartrees
Energy at 0K-692.153401
Energy at 298.15K-692.153313
HF Energy-691.504401
Nuclear repulsion energy68.321108
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=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' 1946 1871        
2 A' 308 296        
3 A' 185 178        

Unscaled Zero Point Vibrational Energy (zpe) 1219.6 cm-1
Scaled (by 0.9615) Zero Point Vibrational Energy (zpe) 1172.7 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 MP4=FULL/6-311G**
ABC
1.85024 0.16434 0.15094

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.041 0.000
C2 0.640 -1.595 0.000
N3 -0.548 -1.459 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.71322.5593
C22.71321.1960
N32.55931.1960

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 69.792 K1 N3 C2 84.197
C2 K1 N3 26.012
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability