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

using model chemistry: LSDA/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 3 yes CS 1A'

Conformer 1 (C*V)

Jump to S1C2 S1C3
Vibrational Frequencies calculated at LSDA/3-21G*
Rotational Constants (cm-1) from geometry optimized at LSDA/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C*V)

Jump to S1C1 S1C3
Vibrational Frequencies calculated at LSDA/3-21G*
Rotational Constants (cm-1) from geometry optimized at LSDA/3-21G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at LSDA/3-21G*
 hartrees
Energy at 0K-687.372204
Energy at 298.15K-687.372084
HF Energy-687.372204
Nuclear repulsion energy69.356879
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 LSDA/3-21G*
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' 2038 2001 12.82      
2 A' 337 331 42.37      
3 A' 146 143 6.48      

Unscaled Zero Point Vibrational Energy (zpe) 1260.6 cm-1
Scaled (by 0.982) Zero Point Vibrational Energy (zpe) 1237.9 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 LSDA/3-21G*
ABC
1.89615 0.17040 0.15635

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.022 0.000
C2 0.633 -1.603 0.000
N3 -0.542 -1.399 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.69962.4810
C22.69961.1922
N32.48101.1922

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 66.624 K1 N3 C2 87.204
C2 K1 N3 26.172
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.421      
2 C -0.013      
3 N -0.408      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.464 9.645 0.000 9.657
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.429 1.000 0.000
y 1.000 -25.170 0.000
z 0.000 0.000 -24.192
Traceless
 xyz
x -3.748 1.000 0.000
y 1.000 1.140 0.000
z 0.000 0.000 2.607
Polar
3z2-r25.215
x2-y2-3.259
xy1.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.700 -0.144 0.000
y -0.144 4.490 0.000
z 0.000 0.000 3.668


<r2> (average value of r2) Å2
<r2> 69.608
(<r2>)1/2 8.343