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: BLYP/3-21G

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 BLYP/3-21G
 hartrees
Energy at 0K-689.203708
Energy at 298.15K-689.203147
HF Energy-689.203708
Nuclear repulsion energy60.445869
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 BLYP/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 Σ 2075 2063 8.99      
2 Σ 268 267 36.17      
3 Π 100 99 19.31      
3 Π 100 99 19.31      

Unscaled Zero Point Vibrational Energy (zpe) 1270.8 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 1263.8 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 BLYP/3-21G
B
0.09745

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.317
C2 0.000 0.000 -1.284
N3 0.000 0.000 -2.474

Atom - Atom Distances (Å)
  K1 C2 N3
K12.60053.7903
C22.60051.1898
N33.79031.1898

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
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.572      
2 C -0.156      
3 N -0.416      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 11.528 11.528
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.711 0.000 0.000
y 0.000 -24.711 0.000
z 0.000 0.000 -28.649
Traceless
 xyz
x 1.969 0.000 0.000
y 0.000 1.969 0.000
z 0.000 0.000 -3.938
Polar
3z2-r2-7.876
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.779 0.000 0.000
y 0.000 4.779 0.000
z 0.000 0.000 9.151


<r2> (average value of r2) Å2
<r2> 101.915
(<r2>)1/2 10.095

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-689.204613
Energy at 298.15K 
HF Energy-689.204613
Nuclear repulsion energy63.419187
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 BLYP/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 Σ 2026 2015 61.57      
2 Σ 293 291 33.08      
3 Π 49i 49i 3.12      
3 Π 49i 49i 3.12      

Unscaled Zero Point Vibrational Energy (zpe) 1110.4 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 1104.3 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 BLYP/3-21G
B
0.11071

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.230
C2 0.000 0.000 -2.443
N3 0.000 0.000 -1.246

Atom - Atom Distances (Å)
  K1 C2 N3
K13.67282.4758
C23.67281.1971
N32.47581.1971

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
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.566      
2 C 0.002      
3 N -0.568      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 11.772 11.772
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.827 0.000 0.000
y 0.000 -24.827 0.000
z 0.000 0.000 -31.870
Traceless
 xyz
x 3.521 0.000 0.000
y 0.000 3.521 0.000
z 0.000 0.000 -7.043
Polar
3z2-r2-14.086
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.970 0.000 0.000
y 0.000 4.970 0.000
z 0.000 0.000 11.372


<r2> (average value of r2) Å2
<r2> 92.387
(<r2>)1/2 9.612

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at BLYP/3-21G
 hartrees
Energy at 0K-689.209295
Energy at 298.15K-689.209120
HF Energy-689.209295
Nuclear repulsion energy67.161048
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 BLYP/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' 1980 1969 10.34      
2 A' 281 279 38.86      
3 A' 153 152 4.14      

Unscaled Zero Point Vibrational Energy (zpe) 1206.6 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 1200.0 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 BLYP/3-21G
ABC
1.83862 0.15693 0.14459

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.065 0.000
C2 0.642 -1.636 0.000
N3 -0.550 -1.490 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.77662.6137
C22.77661.2009
N32.61371.2009

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 69.641 K1 N3 C2 84.843
C2 K1 N3 25.516
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.521      
2 C -0.055      
3 N -0.466      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.541 10.249 0.000 10.263
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.951 0.906 0.000
y 0.906 -25.865 0.000
z 0.000 0.000 -24.974
Traceless
 xyz
x -3.532 0.906 0.000
y 0.906 1.097 0.000
z 0.000 0.000 2.435
Polar
3z2-r24.870
x2-y2-3.086
xy0.906
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.309 -0.066 0.000
y -0.066 5.247 0.000
z 0.000 0.000 4.570


<r2> (average value of r2) Å2
<r2> 74.364
(<r2>)1/2 8.623