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

using model chemistry: HF/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at HF/6-311G*
 hartrees
Energy at 0K-407.128357
Energy at 298.15K-407.127685
HF Energy-407.128357
Nuclear repulsion energy326.740092
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 HF/6-311G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2639 2387 0.00      
2 A1 620 560 0.00      
3 E 655 593 0.00      
3 E 655 593 0.00      
4 E 130 117 0.00      
4 E 130 117 0.00      
5 T1 401 362 0.00      
5 T1 401 362 0.00      
5 T1 401 362 0.00      
6 T2 2633 2381 1.20      
6 T2 2633 2381 1.20      
6 T2 2633 2381 1.20      
7 T2 1191 1077 54.37      
7 T2 1191 1077 54.37      
7 T2 1191 1077 54.37      
8 T2 621 561 1.50      
8 T2 621 561 1.50      
8 T2 621 561 1.50      
9 T2 170 154 17.18      
9 T2 170 154 17.18      
9 T2 170 154 17.18      

Unscaled Zero Point Vibrational Energy (zpe) 9937.0 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 8987.0 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 HF/6-311G*
ABC
0.05202 0.05202 0.05202

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.856 0.856 0.856
C3 -0.856 -0.856 0.856
C4 -0.856 0.856 -0.856
C5 0.856 -0.856 -0.856
N6 1.505 1.505 1.505
N7 -1.505 -1.505 1.505
N8 -1.505 1.505 -1.505
N9 1.505 -1.505 -1.505

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48181.48181.48181.48182.60702.60702.60702.6070
C21.48182.41982.41982.41981.12513.40113.40113.4011
C31.48182.41982.41982.41983.40111.12513.40113.4011
C41.48182.41982.41982.41983.40113.40111.12513.4011
C51.48182.41982.41982.41983.40113.40113.40111.1251
N62.60701.12513.40113.40113.40114.25714.25714.2571
N72.60703.40111.12513.40113.40114.25714.25714.2571
N82.60703.40113.40111.12513.40114.25714.25714.2571
N92.60703.40113.40113.40111.12514.25714.25714.2571

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 HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.169      
2 C 0.282      
3 C 0.282      
4 C 0.282      
5 C 0.282      
6 N -0.240      
7 N -0.240      
8 N -0.240      
9 N -0.240      


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 -58.097 0.000 0.000
y 0.000 -58.097 0.000
z 0.000 0.000 -58.097
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 8.307 0.000 0.000
y 0.000 8.307 0.000
z 0.000 0.000 8.307


<r2> (average value of r2) Å2
<r2> 279.278
(<r2>)1/2 16.712