return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CID/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 CID/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.025127
Energy at 298.15K-692.024510
HF Energy-691.512598
Nuclear repulsion energy60.874243
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 CID/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 2289 2115 0.00      
2 Σ 278 257 69.36      
3 Π 80 74 6.85      
3 Π 80 74 6.85      

Unscaled Zero Point Vibrational Energy (zpe) 1363.1 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 1259.5 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 CID/6-311+G(3df,2p)
B
0.09759

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.318
C2 0.000 0.000 -1.304
N3 0.000 0.000 -2.459

Atom - Atom Distances (Å)
  K1 C2 N3
K12.62153.7773
C22.62151.1558
N33.77731.1558

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 CID/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.029383
Energy at 298.15K 
HF Energy-691.519506
Nuclear repulsion energy64.474822
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 CID/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 2228 2058 122.84      
2 Σ 313 289 84.45      
3 Π 45i 41i 1.58      
3 Π 45i 41i 1.58      

Unscaled Zero Point Vibrational Energy (zpe) 1225.1 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 1132.0 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 CID/6-311+G(3df,2p)
B
0.11380

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.215
C2 0.000 0.000 -2.402
N3 0.000 0.000 -1.238

Atom - Atom Distances (Å)
  K1 C2 N3
K13.61632.4523
C23.61631.1640
N32.45231.1640

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 CID/6-311+G(3df,2p)
 hartrees
Energy at 0K-692.032486
Energy at 298.15K-692.032328
HF Energy-691.520602
Nuclear repulsion energy68.386053
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 CID/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' 2217 2049 34.15      
2 A' 306 282 67.14      
3 A' 142 131 10.81      

Unscaled Zero Point Vibrational Energy (zpe) 1332.5 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 1231.2 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 CID/6-311+G(3df,2p)
ABC
2.02670 0.15956 0.14792

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.055 0.000
C2 0.612 -1.676 0.000
N3 -0.525 -1.427 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.79922.5374
C22.79921.1638
N32.53741.1638

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 65.017 K1 N3 C2 90.417
C2 K1 N3 24.566
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability