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

using model chemistry: CCSD(T)/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 CCSD(T)/6-311G*
 hartrees
Energy at 0K-691.998691
Energy at 298.15K-691.998042
HF Energy-691.497631
Nuclear repulsion energy60.526267
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 CCSD(T)/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 2120 2040        
2 Σ 284 273        
3 Π 70 68        
3 Π 70 68        

Unscaled Zero Point Vibrational Energy (zpe) 1271.7 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 1224.1 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 CCSD(T)/6-311G*
B
0.09733

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/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 -1.291
N3 0.000 0.000 -2.471

Atom - Atom Distances (Å)
  K1 C2 N3
K12.60943.7893
C22.60941.1799
N33.78931.1799

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 CCSD(T)/6-311G*
 hartrees
Energy at 0K-692.000198
Energy at 298.15K 
HF Energy-691.505283
Nuclear repulsion energy63.955359
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 CCSD(T)/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 2080 2002        
2 Σ 318 306        
3 Π 67i 65i        
3 Π 67i 65i        

Unscaled Zero Point Vibrational Energy (zpe) 1131.3 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 1089.0 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 CCSD(T)/6-311G*
B
0.11258

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/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 -2.422
N3 0.000 0.000 -1.235

Atom - Atom Distances (Å)
  K1 C2 N3
K13.64212.4552
C23.64211.1868
N32.45521.1868

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 CCSD(T)/6-311G*
 hartrees
Energy at 0K-692.006414
Energy at 298.15K-692.006318
HF Energy-691.505812
Nuclear repulsion energy68.387883
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 CCSD(T)/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' 2056 1979        
2 A' 308 296        
3 A' 182 175        

Unscaled Zero Point Vibrational Energy (zpe) 1272.6 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 1225.0 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 CCSD(T)/6-311G*
ABC
1.87875 0.16375 0.15062

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.043 0.000
C2 0.635 -1.602 0.000
N3 -0.544 -1.458 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.72002.5597
C22.72001.1879
N32.55971.1879

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 69.553 K1 N3 C2 84.671
C2 K1 N3 25.775
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability