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

using model chemistry: TPSSh/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at TPSSh/6-31+G**
 hartrees
Energy at 0K-409.417817
Energy at 298.15K-409.416403
HF Energy-409.417817
Nuclear repulsion energy321.564955
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 TPSSh/6-31+G**
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 2356 2268 0.00      
2 A1 578 556 0.00      
3 E 558 537 0.00      
3 E 558 537 0.00      
4 E 108 104 0.00      
4 E 108 104 0.00      
5 T1 336 324 0.00      
5 T1 336 324 0.00      
5 T1 336 324 0.00      
6 T2 2348 2260 7.89      
6 T2 2348 2260 7.89      
6 T2 2348 2260 7.89      
7 T2 1055 1015 40.91      
7 T2 1055 1015 40.91      
7 T2 1055 1015 40.91      
8 T2 543 523 0.09      
8 T2 543 523 0.09      
8 T2 543 523 0.09      
9 T2 143 137 11.69      
9 T2 143 137 11.69      
9 T2 143 137 11.69      

Unscaled Zero Point Vibrational Energy (zpe) 8770.4 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 8441.5 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 TPSSh/6-31+G**
ABC
0.05057 0.05057 0.05057

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.859 0.859 0.859
C3 -0.859 -0.859 0.859
C4 -0.859 0.859 -0.859
C5 0.859 -0.859 -0.859
N6 1.531 1.531 1.531
N7 -1.531 -1.531 1.531
N8 -1.531 1.531 -1.531
N9 1.531 -1.531 -1.531

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48851.48851.48851.48852.65102.65102.65102.6510
C21.48852.43072.43072.43071.16253.44593.44593.4459
C31.48852.43072.43072.43073.44591.16253.44593.4459
C41.48852.43072.43072.43073.44593.44591.16253.4459
C51.48852.43072.43072.43073.44593.44593.44591.1625
N62.65101.16253.44593.44593.44594.32904.32904.3290
N72.65103.44591.16253.44593.44594.32904.32904.3290
N82.65103.44593.44591.16253.44594.32904.32904.3290
N92.65103.44593.44593.44591.16254.32904.32904.3290

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 TPSSh/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.653      
2 C 0.136      
3 C 0.136      
4 C 0.136      
5 C 0.136      
6 N -0.300      
7 N -0.300      
8 N -0.300      
9 N -0.300      


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


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.163 0.000 0.000
y 0.000 10.163 0.000
z 0.000 0.000 10.163


<r2> (average value of r2) Å2
<r2> 285.684
(<r2>)1/2 16.902