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

using model chemistry: CCSD=FULL/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=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.267427
Energy at 298.15K-692.266828
HF Energy-691.511653
Nuclear repulsion energy60.764576
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=FULL/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 2191 2191 0.97      
2 Σ 278 278 67.59      
3 Π 85 85 7.51      
3 Π 85 85 7.51      

Unscaled Zero Point Vibrational Energy (zpe) 1319.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1319.0 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=FULL/6-311+G(3df,2p)
B
0.09766

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.317
C2 0.000 0.000 -1.296
N3 0.000 0.000 -2.463

Atom - Atom Distances (Å)
  K1 C2 N3
K12.61313.7794
C22.61311.1663
N33.77941.1663

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=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.270178
Energy at 298.15K 
HF Energy-691.518844
Nuclear repulsion energy64.267785
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=FULL/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 2143 2143 100.29      
2 Σ 310 310 82.83      
3 Π 39i 39i 1.31      
3 Π 39i 39i 1.31      

Unscaled Zero Point Vibrational Energy (zpe) 1187.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1187.6 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=FULL/6-311+G(3df,2p)
B
0.11334

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.217
C2 0.000 0.000 -2.410
N3 0.000 0.000 -1.236

Atom - Atom Distances (Å)
  K1 C2 N3
K13.62642.4528
C23.62641.1735
N32.45281.1735

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=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.273932
Energy at 298.15K-692.273794
HF Energy-691.519576
Nuclear repulsion energy68.449477
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=FULL/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' 2127 2127 21.95      
2 A' 301 301 68.96      
3 A' 159 159 8.72      

Unscaled Zero Point Vibrational Energy (zpe) 1293.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1293.3 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 CCSD=FULL/6-311+G(3df,2p)
ABC
1.94828 0.16198 0.14955

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.048 0.000
C2 0.624 -1.633 0.000
N3 -0.535 -1.445 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.75282.5503
C22.75281.1736
N32.55031.1736

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 67.704 K1 N3 C2 87.096
C2 K1 N3 25.200
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability