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

using model chemistry: B1B95/6-31G*

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 B1B95/6-31G*
 hartrees
Energy at 0K-692.780034
Energy at 298.15K-692.779416
HF Energy-692.780034
Nuclear repulsion energy60.798295
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 B1B95/6-31G*
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 2253 2138 0.00      
2 Σ 306 291 52.08      
3 Π 72 68 9.76      
3 Π 72 68 9.76      

Unscaled Zero Point Vibrational Energy (zpe) 1351.2 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 1282.7 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 B1B95/6-31G*
B
0.09797

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.314
C2 0.000 0.000 -1.291
N3 0.000 0.000 -2.461

Atom - Atom Distances (Å)
  K1 C2 N3
K12.60523.7750
C22.60521.1699
N33.77501.1699

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 B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.682      
2 C -0.247      
3 N -0.435      


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 12.123 12.123
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.905 0.000 0.000
y 0.000 -22.905 0.000
z 0.000 0.000 -30.113
Traceless
 xyz
x 3.604 0.000 0.000
y 0.000 3.604 0.000
z 0.000 0.000 -7.207
Polar
3z2-r2-14.415
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 3.082 0.000 -0.000
y 0.000 3.082 -0.000
z -0.000 -0.000 6.017


<r2> (average value of r2) Å2
<r2> 101.012
(<r2>)1/2 10.050

Conformer 2 (C*V)

Jump to S1C1 S1C3
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-692.780495
Energy at 298.15K 
HF Energy-692.780495
Nuclear repulsion energy64.110349
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 B1B95/6-31G*
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 2190 2079 60.99      
2 Σ 330 313 64.80      
3 Π 81i 77i 2.53      
3 Π 81i 77i 2.52      

Unscaled Zero Point Vibrational Energy (zpe) 1179.1 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 1119.4 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 B1B95/6-31G*
B
0.11289

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 0.000 1.219
C2 0.000 0.000 -2.416
N3 0.000 0.000 -1.237

Atom - Atom Distances (Å)
  K1 C2 N3
K13.63462.4559
C23.63461.1788
N32.45591.1788

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 B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.723      
2 C -0.136      
3 N -0.587      


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 11.995 11.995
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -22.910 0.000 0.000
y 0.000 -22.910 0.000
z 0.000 0.000 -31.999
Traceless
 xyz
x 4.545 0.000 0.000
y 0.000 4.545 0.000
z 0.000 0.000 -9.089
Polar
3z2-r2-18.178
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 2.958 -0.001 0.025
y -0.001 2.958 0.033
z 0.025 0.033 5.311


<r2> (average value of r2) Å2
<r2> 90.155
(<r2>)1/2 9.495

Conformer 3 (CS)

Jump to S1C1 S1C2
Energy calculated at B1B95/6-31G*
 hartrees
Energy at 0K-692.788033
Energy at 298.15K-692.787945
HF Energy-692.788033
Nuclear repulsion energy68.684019
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 B1B95/6-31G*
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' 2169 2059 21.23      
2 A' 312 296 63.38      
3 A' 187 178 1.99      

Unscaled Zero Point Vibrational Energy (zpe) 1333.6 cm-1
Scaled (by 0.9493) Zero Point Vibrational Energy (zpe) 1266.0 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 B1B95/6-31G*
ABC
1.89423 0.16498 0.15177

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
K1 0.000 1.039 0.000
C2 0.632 -1.576 0.000
N3 -0.542 -1.470 0.000

Atom - Atom Distances (Å)
  K1 C2 N3
K12.69102.5676
C22.69101.1787
N32.56761.1787

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 71.261 K1 N3 C2 82.971
C2 K1 N3 25.769
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 K 0.649      
2 C -0.159      
3 N -0.491      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.394 9.957 0.000 9.965
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -27.143 0.557 0.000
y 0.557 -25.721 0.000
z 0.000 0.000 -23.151
Traceless
 xyz
x -2.707 0.557 0.000
y 0.557 -0.574 0.000
z 0.000 0.000 3.280
Polar
3z2-r26.560
x2-y2-1.422
xy0.557
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.422 -0.057 0.000
y -0.057 4.346 0.000
z 0.000 0.000 3.321


<r2> (average value of r2) Å2
<r2> 70.848
(<r2>)1/2 8.417