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

using model chemistry: QCISD(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 QCISD(T)/6-311G*
 hartrees
Energy at 0K-691.999333
Energy at 298.15K-691.998684
HF Energy-691.497532
Nuclear repulsion energy60.510427
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 QCISD(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 2113 2035        
2 Σ 284 273        
3 Π 70 68        
3 Π 70 68        

Unscaled Zero Point Vibrational Energy (zpe) 1268.5 cm-1
Scaled (by 0.9628) Zero Point Vibrational Energy (zpe) 1221.4 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 QCISD(T)/6-311G*
B
0.09730

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(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 -2.472

Atom - Atom Distances (Å)
  K1 C2 N3
K12.60963.7901
C22.60961.1805
N33.79011.1805

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 QCISD(T)/6-311G*
 hartrees
Energy at 0K-692.000901
Energy at 298.15K 
HF Energy-691.505175
Nuclear repulsion energy63.940666
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 QCISD(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 2071 1994        
2 Σ 318 306        
3 Π 67i 65i        
3 Π 67i 65i        

Unscaled Zero Point Vibrational Energy (zpe) 1127.5 cm-1
Scaled (by 0.9628) Zero Point Vibrational Energy (zpe) 1085.6 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 QCISD(T)/6-311G*
B
0.11255

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(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 -2.423
N3 0.000 0.000 -1.235

Atom - Atom Distances (Å)
  K1 C2 N3
K13.64282.4552
C23.64281.1876
N32.45521.1876

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 QCISD(T)/6-311G*
 hartrees
Energy at 0K-692.007078
Energy at 298.15K-692.006982
HF Energy-691.505713
Nuclear repulsion energy68.371450
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 QCISD(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' 2048 1972        
2 A' 308 296        
3 A' 182 175        

Unscaled Zero Point Vibrational Energy (zpe) 1268.8 cm-1
Scaled (by 0.9628) Zero Point Vibrational Energy (zpe) 1221.6 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 QCISD(T)/6-311G*
ABC
1.87698 0.16371 0.15058

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(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 -1.603 0.000
N3 -0.545 -1.458 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.72092.5595
C22.72091.1886
N32.55951.1886

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 69.500 K1 N3 C2 84.715
C2 K1 N3 25.784
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability