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

using model chemistry: TPSSh/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 TPSSh/6-31G*
 hartrees
Energy at 0K-409.406574
Energy at 298.15K-409.405162
HF Energy-409.406574
Nuclear repulsion energy321.645659
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/6-31G*
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 2362 2266 0.00      
2 A1 580 556 0.00      
3 E 560 537 0.00      
3 E 560 537 0.00      
4 E 108 104 0.00      
4 E 108 104 0.00      
5 T1 342 328 0.00      
5 T1 342 328 0.00      
5 T1 342 328 0.00      
6 T2 2354 2259 7.53      
6 T2 2354 2259 7.53      
6 T2 2354 2259 7.53      
7 T2 1059 1016 37.46      
7 T2 1059 1016 37.46      
7 T2 1059 1016 37.46      
8 T2 546 524 0.01      
8 T2 546 524 0.01      
8 T2 546 524 0.01      
9 T2 143 137 11.67      
9 T2 143 137 11.67      
9 T2 143 137 11.67      

Unscaled Zero Point Vibrational Energy (zpe) 8804.0 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 8446.5 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/6-31G*
ABC
0.05060 0.05060 0.05060

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

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 1.530 1.530 1.530
N7 -1.530 -1.530 1.530
N8 -1.530 1.530 -1.530
N9 1.530 -1.530 -1.530

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48781.48781.48781.48782.65042.65042.65042.6504
C21.48782.42962.42962.42961.16263.44483.44483.4448
C31.48782.42962.42962.42963.44481.16263.44483.4448
C41.48782.42962.42962.42963.44483.44481.16263.4448
C51.48782.42962.42962.42963.44483.44483.44481.1626
N62.65041.16263.44483.44483.44484.32804.32804.3280
N72.65043.44481.16263.44483.44484.32804.32804.3280
N82.65043.44483.44481.16263.44484.32804.32804.3280
N92.65043.44483.44483.44481.16264.32804.32804.3280

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/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.189      
2 C 0.455      
3 C 0.455      
4 C 0.455      
5 C 0.455      
6 N -0.407      
7 N -0.407      
8 N -0.407      
9 N -0.407      


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 8.807 0.000 0.000
y 0.000 8.807 0.000
z 0.000 0.000 8.807


<r2> (average value of r2) Å2
<r2> 284.721
(<r2>)1/2 16.874