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

using model chemistry: B3PW91/6-31G**

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**
 hartrees
Energy at 0K-409.214003
Energy at 298.15K-409.212694
HF Energy-409.214003
Nuclear repulsion energy322.646813
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**
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 2399 2299 0.00      
2 A1 587 563 0.00      
3 E 568 545 0.00      
3 E 568 545 0.00      
4 E 111 106 0.00      
4 E 111 106 0.00      
5 T1 347 333 0.00      
5 T1 347 333 0.00      
5 T1 347 333 0.00      
6 T2 2392 2292 6.86      
6 T2 2392 2292 6.86      
6 T2 2392 2292 6.86      
7 T2 1083 1038 35.06      
7 T2 1083 1038 35.06      
7 T2 1083 1038 35.06      
8 T2 553 530 0.03      
8 T2 553 530 0.03      
8 T2 553 530 0.03      
9 T2 146 140 12.35      
9 T2 146 140 12.35      
9 T2 146 140 12.35      

Unscaled Zero Point Vibrational Energy (zpe) 8954.0 cm-1
Scaled (by 0.9584) Zero Point Vibrational Energy (zpe) 8581.5 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**
ABC
0.05091 0.05091 0.05091

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G**

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.857 0.857 0.857
C3 -0.857 -0.857 0.857
C4 -0.857 0.857 -0.857
C5 0.857 -0.857 -0.857
N6 1.525 1.525 1.525
N7 -1.525 -1.525 1.525
N8 -1.525 1.525 -1.525
N9 1.525 -1.525 -1.525

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48371.48371.48371.48372.64212.64212.64212.6421
C21.48372.42292.42292.42291.15833.43453.43453.4345
C31.48372.42292.42292.42293.43451.15833.43453.4345
C41.48372.42292.42292.42293.43453.43451.15833.4345
C51.48372.42292.42292.42293.43453.43453.43451.1583
N62.64211.15833.43453.43453.43454.31454.31454.3145
N72.64213.43451.15833.43453.43454.31454.31454.3145
N82.64213.43453.43451.15833.43454.31454.31454.3145
N92.64213.43453.43453.43451.15834.31454.31454.3145

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** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.216      
2 C 0.456      
3 C 0.456      
4 C 0.456      
5 C 0.456      
6 N -0.402      
7 N -0.402      
8 N -0.402      
9 N -0.402      


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 -55.921 0.000 0.000
y 0.000 -55.921 0.000
z 0.000 0.000 -55.921
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 8.644 0.000 0.000
y 0.000 8.644 0.000
z 0.000 0.000 8.644


<r2> (average value of r2) Å2
<r2> 283.218
(<r2>)1/2 16.829