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

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-408.926904
Energy at 298.15K-408.925377
HF Energy-408.926904
Nuclear repulsion energy320.304429
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 PBEPBE/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 2298 2266 0.00      
2 A1 570 563 0.00      
3 E 542 535 0.00      
3 E 542 535 0.00      
4 E 105 104 0.00      
4 E 105 104 0.00      
5 T1 332 327 0.00      
5 T1 332 327 0.00      
5 T1 332 327 0.00      
6 T2 2289 2258 9.03      
6 T2 2289 2258 9.03      
6 T2 2289 2258 9.03      
7 T2 1033 1019 29.15      
7 T2 1033 1019 29.15      
7 T2 1033 1019 29.15      
8 T2 531 524 0.07      
8 T2 531 524 0.07      
8 T2 531 524 0.07      
9 T2 139 137 10.44      
9 T2 139 137 10.44      
9 T2 139 137 10.44      

Unscaled Zero Point Vibrational Energy (zpe) 8567.5 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 8450.2 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 PBEPBE/6-31G**
ABC
0.05022 0.05022 0.05022

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.861 0.861 0.861
C3 -0.861 -0.861 0.861
C4 -0.861 0.861 -0.861
C5 0.861 -0.861 -0.861
N6 1.537 1.537 1.537
N7 -1.537 -1.537 1.537
N8 -1.537 1.537 -1.537
N9 1.537 -1.537 -1.537

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.49041.49041.49041.49042.66202.66202.66202.6620
C21.49042.43392.43392.43391.17163.45723.45723.4572
C31.49042.43392.43392.43393.45721.17163.45723.4572
C41.49042.43392.43392.43393.45723.45721.17163.4572
C51.49042.43392.43392.43393.45723.45723.45721.1716
N62.66201.17163.45723.45723.45724.34704.34704.3470
N72.66203.45721.17163.45723.45724.34704.34704.3470
N82.66203.45723.45721.17163.45724.34704.34704.3470
N92.66203.45723.45723.45721.17164.34704.34704.3470

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 PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.244      
2 C 0.447      
3 C 0.447      
4 C 0.447      
5 C 0.447      
6 N -0.386      
7 N -0.386      
8 N -0.386      
9 N -0.386      


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 -55.613 0.000 0.000
y 0.000 -55.613 0.000
z 0.000 0.000 -55.613
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 9.015 0.000 0.000
y 0.000 9.015 0.000
z 0.000 0.000 9.015


<r2> (average value of r2) Å2
<r2> 286.461
(<r2>)1/2 16.925