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

using model chemistry: MP2/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at MP2/Def2TZVPP
 hartrees
Energy at 0K-691.861468
Energy at 298.15K-691.860817
HF Energy-691.516355
Nuclear repulsion energy59.500390
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 MP2/Def2TZVPP
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 2056 1956 2.85      
2 Σ 268 255 63.25      
3 Π 75 71 10.93      
3 Π 75 71 10.93      

Unscaled Zero Point Vibrational Energy (zpe) 1236.3 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 1176.3 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 MP2/Def2TZVPP
B
0.09318

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/Def2TZVPP

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 -1.311
N3 0.000 0.000 -2.472

Atom - Atom Distances (Å)
  K1 C2 N3
K12.63543.7968
C22.63541.1614
N33.79681.1614

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