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

using model chemistry: TPSSh/3-21G

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/3-21G
 hartrees
Energy at 0K-407.159550
Energy at 298.15K-407.158865
HF Energy-407.159550
Nuclear repulsion energy321.755721
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/3-21G
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 2332 2259 0.00      
2 A1 587 568 0.00      
3 E 644 624 0.00      
3 E 644 624 0.00      
4 E 132 128 0.00      
4 E 132 128 0.00      
5 T1 440 426 0.00      
5 T1 440 426 0.00      
5 T1 440 426 0.00      
6 T2 2322 2250 9.51      
6 T2 2322 2250 9.51      
6 T2 2322 2250 9.51      
7 T2 1049 1016 36.44      
7 T2 1049 1016 36.44      
7 T2 1049 1016 36.44      
8 T2 590 572 0.45      
8 T2 590 572 0.45      
8 T2 590 572 0.45      
9 T2 170 165 8.43      
9 T2 170 165 8.43      
9 T2 170 165 8.43      

Unscaled Zero Point Vibrational Energy (zpe) 9092.2 cm-1
Scaled (by 0.9688) Zero Point Vibrational Energy (zpe) 8808.6 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/3-21G
ABC
0.05069 0.05069 0.05069

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G

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 1.530 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
C11.48211.48211.48211.48212.65022.65022.65022.6502
C21.48212.42022.42022.42021.16823.44073.44073.4407
C31.48212.42022.42022.42023.44071.16823.44073.4407
C41.48212.42022.42022.42023.44073.44071.16823.4407
C51.48212.42022.42022.42023.44073.44073.44071.1682
N62.65021.16823.44073.44073.44074.32784.32784.3278
N72.65023.44071.16823.44073.44074.32784.32784.3278
N82.65023.44073.44071.16823.44074.32784.32784.3278
N92.65023.44073.44073.44071.16824.32784.32784.3278

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/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.576      
2 C 0.551      
3 C 0.551      
4 C 0.551      
5 C 0.551      
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 7.833 0.000 0.000
y 0.000 7.833 0.000
z 0.000 0.000 7.833


<r2> (average value of r2) Å2
<r2> 284.619
(<r2>)1/2 16.871