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All results from a given calculation for C(CN)4 (tetracyanomethane)

using model chemistry: B3PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at B3PW91/6-31G(2df,p)
 hartrees
Energy at 0K-409.236268
Energy at 298.15K-409.235050
HF Energy-409.236268
Nuclear repulsion energy323.657695
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 B3PW91/6-31G(2df,p)
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 2396 2304 0.00      
2 A1 591 569 0.00      
3 E 575 553 0.00      
3 E 575 553 0.00      
4 E 113 109 0.00      
4 E 113 109 0.00      
5 T1 356 342 0.00      
5 T1 356 342 0.00      
5 T1 356 342 0.00      
6 T2 2387 2295 6.79      
6 T2 2387 2295 6.79      
6 T2 2387 2295 6.79      
7 T2 1080 1038 30.59      
7 T2 1080 1038 30.59      
7 T2 1080 1038 30.59      
8 T2 559 537 0.25      
8 T2 559 537 0.25      
8 T2 559 537 0.25      
9 T2 150 144 13.57      
9 T2 150 144 13.57      
9 T2 150 144 13.57      

Unscaled Zero Point Vibrational Energy (zpe) 8978.3 cm-1
Scaled (by 0.9614) Zero Point Vibrational Energy (zpe) 8631.7 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 B3PW91/6-31G(2df,p)
ABC
0.05122 0.05122 0.05122

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G(2df,p)

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.855 0.855 0.855
C3 -0.855 -0.855 0.855
C4 -0.855 0.855 -0.855
C5 0.855 -0.855 -0.855
N6 1.521 1.521 1.521
N7 -1.521 -1.521 1.521
N8 -1.521 1.521 -1.521
N9 1.521 -1.521 -1.521

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48041.48041.48041.48042.63362.63362.63362.6336
C21.48042.41752.41752.41751.15323.42453.42453.4245
C31.48042.41752.41752.41753.42451.15323.42453.4245
C41.48042.41752.41752.41753.42453.42451.15323.4245
C51.48042.41752.41752.41753.42453.42453.42451.1532
N62.63361.15323.42453.42453.42454.30074.30074.3007
N72.63363.42451.15323.42453.42454.30074.30074.3007
N82.63363.42453.42451.15323.42454.30074.30074.3007
N92.63363.42453.42453.42451.15324.30074.30074.3007

picture of tetracyanomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 N6 180.000 C1 C3 N7 180.000
C1 C4 N8 180.000 C1 C5 N9 180.000
C2 C1 C3 109.471 C2 C1 C4 109.471
C2 C1 C5 109.471 C3 C1 C4 109.471
C3 C1 C5 109.471 C4 C1 C5 109.471
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.405      
2 C 0.398      
3 C 0.398      
4 C 0.398      
5 C 0.398      
6 N -0.297      
7 N -0.297      
8 N -0.297      
9 N -0.297      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -55.749 0.000 0.000
y 0.000 -55.749 0.000
z 0.000 0.000 -55.749
Traceless
 xyz
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000
Polar
3z2-r20.000
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 9.118 0.000 0.000
y 0.000 9.118 0.000
z 0.000 0.000 9.118


<r2> (average value of r2) Å2
<r2> 281.628
(<r2>)1/2 16.782