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

using model chemistry: MP4=FULL/6-31G*

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 MP4=FULL/6-31G*
 hartrees
Energy at 0K-691.778900
Energy at 298.15K-691.778326
HF Energy-691.439221
Nuclear repulsion energy60.126612
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 MP4=FULL/6-31G*
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 2051 1972        
2 Σ 291 279        
3 Π 90 86        
3 Π 90 86        

Unscaled Zero Point Vibrational Energy (zpe) 1260.2 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 1211.8 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 MP4=FULL/6-31G*
B
0.09625

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.325
C2 0.000 0.000 -1.295
N3 0.000 0.000 -2.487

Atom - Atom Distances (Å)
  K1 C2 N3
K12.62013.8122
C22.62011.1921
N33.81221.1921

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 MP4=FULL/6-31G*
 hartrees
Energy at 0K-691.778643
Energy at 298.15K 
HF Energy-691.445069
Nuclear repulsion energy63.474273
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 MP4=FULL/6-31G*
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 2001 1924        
2 Σ 324 312        
3 Π 69i 66i        
3 Π 69i 66i        

Unscaled Zero Point Vibrational Energy (zpe) 1093.6 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 1051.6 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 MP4=FULL/6-31G*
B
0.11107

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.228
C2 0.000 0.000 -2.441
N3 0.000 0.000 -1.241

Atom - Atom Distances (Å)
  K1 C2 N3
K13.66862.4686
C23.66861.2000
N32.46861.2000

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 MP4=FULL/6-31G*
 hartrees
Energy at 0K-691.786707
Energy at 298.15K-691.786632
HF Energy-691.447657
Nuclear repulsion energy67.910816
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 MP4=FULL/6-31G*
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' 1971 1895        
2 A' 308 296        
3 A' 199 191        

Unscaled Zero Point Vibrational Energy (zpe) 1238.7 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 1191.1 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 MP4=FULL/6-31G*
ABC
1.81809 0.16250 0.14917

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.048 0.000
C2 0.645 -1.578 0.000
N3 -0.553 -1.491 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.70322.5981
C22.70321.2013
N32.59811.2013

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 72.065 K1 N3 C2 81.838
C2 K1 N3 26.097
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability