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

using model chemistry: CCSD(T)/6-311+G(3df,2p)

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)/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.124429
Energy at 298.15K-692.123820
HF Energy-691.510372
Nuclear repulsion energy60.556692
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)/6-311+G(3df,2p)
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 2115 2087        
2 Σ 276 273        
3 Π 83 81        
3 Π 83 81        

Unscaled Zero Point Vibrational Energy (zpe) 1278.3 cm-1
Scaled (by 0.9869) Zero Point Vibrational Energy (zpe) 1261.5 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)/6-311+G(3df,2p)
B
0.09728

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311+G(3df,2p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.319
C2 0.000 0.000 -1.294
N3 0.000 0.000 -2.470

Atom - Atom Distances (Å)
  K1 C2 N3
K12.61293.7890
C22.61291.1762
N33.78901.1762

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)/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.126853
Energy at 298.15K 
HF Energy-691.517798
Nuclear repulsion energy64.045492
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)/6-311+G(3df,2p)
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 2072 2045        
2 Σ 308 304        
3 Π 42i 41i        
3 Π 42i 41i        

Unscaled Zero Point Vibrational Energy (zpe) 1148.2 cm-1
Scaled (by 0.9869) Zero Point Vibrational Energy (zpe) 1133.2 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)/6-311+G(3df,2p)
B
0.11281

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311+G(3df,2p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.219
C2 0.000 0.000 -2.419
N3 0.000 0.000 -1.235

Atom - Atom Distances (Å)
  K1 C2 N3
K13.63752.4544
C23.63751.1831
N32.45441.1831

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)/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.130998
Energy at 298.15K-692.130857
HF Energy-691.518416
Nuclear repulsion energy68.222200
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)/6-311+G(3df,2p)
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' 2055 2028        
2 A' 296 292        
3 A' 160 158        

Unscaled Zero Point Vibrational Energy (zpe) 1255.5 cm-1
Scaled (by 0.9869) Zero Point Vibrational Energy (zpe) 1239.1 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)/6-311+G(3df,2p)
ABC
1.90816 0.16179 0.14914

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.049 0.000
C2 0.630 -1.627 0.000
N3 -0.540 -1.453 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.74892.5596
C22.74891.1832
N32.55961.1832

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 68.305 K1 N3 C2 86.258
C2 K1 N3 25.437
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability