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

using model chemistry: MP3=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 MP3=FULL/6-311G*
 hartrees
Energy at 0K-692.115404
Energy at 298.15K-692.114761
HF Energy-691.499565
Nuclear repulsion energy60.835193
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 MP3=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 2271 2271 1.56      
2 Σ 286 286 64.94      
3 Π 71 71 12.04      
3 Π 71 71 12.04      

Unscaled Zero Point Vibrational Energy (zpe) 1349.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1349.1 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 MP3=FULL/6-311G*
B
0.09788

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.315
C2 0.000 0.000 -1.295
N3 0.000 0.000 -2.460

Atom - Atom Distances (Å)
  K1 C2 N3
K12.61013.7750
C22.61011.1649
N33.77501.1649

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 MP3=FULL/6-311G*
 hartrees
Energy at 0K-692.117410
Energy at 298.15K 
HF Energy-691.506813
Nuclear repulsion energy64.299688
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 MP3=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 2216 2216 95.34      
2 Σ 322 322 80.68      
3 Π 65i 65i 1.97      
3 Π 65i 65i 1.97      

Unscaled Zero Point Vibrational Energy (zpe) 1203.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1203.8 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 MP3=FULL/6-311G*
B
0.11344

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.216
C2 0.000 0.000 -2.409
N3 0.000 0.000 -1.236

Atom - Atom Distances (Å)
  K1 C2 N3
K13.62472.4521
C23.62471.1726
N32.45211.1726

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 MP3=FULL/6-311G*
 hartrees
Energy at 0K-692.123216
Energy at 298.15K-692.123124
HF Energy-691.507577
Nuclear repulsion energy68.691367
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 MP3=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' 2199 2199 18.66      
2 A' 312 312 70.00      
3 A' 181 181 6.15      

Unscaled Zero Point Vibrational Energy (zpe) 1345.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1345.8 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 MP3=FULL/6-311G*
ABC
1.93146 0.16395 0.15112

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.042 0.000
C2 0.626 -1.606 0.000
N3 -0.537 -1.452 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.72152.5517
C22.72151.1732
N32.55171.1732

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 69.161 K1 N3 C2 85.391
C2 K1 N3 25.448
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability