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

using model chemistry: B2PLYP=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 B2PLYP=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.667400
Energy at 298.15K-692.666787
HF Energy-692.430593
Nuclear repulsion energy60.966832
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 B2PLYP=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 2128 2128 3.07      
2 Σ 279 279 68.81      
3 Π 81 81 7.30      
3 Π 81 81 7.30      

Unscaled Zero Point Vibrational Energy (zpe) 1284.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1284.1 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 B2PLYP=FULL/6-311+G(3df,2p)
B
0.09868

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=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 1.309
C2 0.000 0.000 -1.284
N3 0.000 0.000 -2.454

Atom - Atom Distances (Å)
  K1 C2 N3
K12.59283.7628
C22.59281.1700
N33.76281.1700

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 B2PLYP=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.669641
Energy at 298.15K 
HF Energy-692.435476
Nuclear repulsion energy64.423311
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 B2PLYP=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 2085 2085 98.84      
2 Σ 311 311 84.07      
3 Π 35i 35i 1.14      
3 Π 36i 36i 1.15      

Unscaled Zero Point Vibrational Energy (zpe) 1162.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1162.5 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 B2PLYP=FULL/6-311+G(3df,2p)
B
0.11419

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=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 1.211
C2 0.000 0.000 -2.404
N3 0.000 0.000 -1.227

Atom - Atom Distances (Å)
  K1 C2 N3
K13.61592.4388
C23.61591.1771
N32.43881.1771

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 B2PLYP=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.673205
Energy at 298.15K-692.673052
HF Energy-692.437498
Nuclear repulsion energy68.486949
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 B2PLYP=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' 2067 2067 19.00      
2 A' 299 299 69.90      
3 A' 151 151 8.78      

Unscaled Zero Point Vibrational Energy (zpe) 1258.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1258.2 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 B2PLYP=FULL/6-311+G(3df,2p)
ABC
1.93670 0.16268 0.15007

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-311+G(3df,2p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.046 0.000
C2 0.626 -1.630 0.000
N3 -0.536 -1.442 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.74842.5447
C22.74841.1772
N32.54471.1772

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 67.616 K1 N3 C2 87.058
C2 K1 N3 25.326
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability