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

using model chemistry: B3LYP/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 B3LYP/3-21G
 hartrees
Energy at 0K-407.146003
Energy at 298.15K-407.145403
HF Energy-407.146003
Nuclear repulsion energy322.622203
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 B3LYP/3-21G
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 2375 2292 0.00      
2 A1 593 572 0.00      
3 E 652 629 0.00      
3 E 652 629 0.00      
4 E 136 131 0.00      
4 E 136 131 0.00      
5 T1 445 429 0.00      
5 T1 445 429 0.00      
5 T1 445 429 0.00      
6 T2 2364 2281 9.14      
6 T2 2364 2281 9.14      
6 T2 2364 2281 9.14      
7 T2 1067 1030 37.73      
7 T2 1067 1030 37.73      
7 T2 1067 1030 37.73      
8 T2 599 578 0.10      
8 T2 599 578 0.10      
8 T2 599 578 0.10      
9 T2 176 170 8.95      
9 T2 176 170 8.95      
9 T2 176 170 8.95      

Unscaled Zero Point Vibrational Energy (zpe) 9247.2 cm-1
Scaled (by 0.9649) Zero Point Vibrational Energy (zpe) 8922.6 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 B3LYP/3-21G
ABC
0.05094 0.05094 0.05094

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/3-21G

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.855 0.855 0.855
C3 -0.855 -0.855 0.855
C4 -0.855 0.855 -0.855
C5 0.855 -0.855 -0.855
N6 1.526 1.526 1.526
N7 -1.526 -1.526 1.526
N8 -1.526 1.526 -1.526
N9 1.526 -1.526 -1.526

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48061.48061.48061.48062.64272.64272.64272.6427
C21.48062.41782.41782.41781.16213.43293.43293.4329
C31.48062.41782.41782.41783.43291.16213.43293.4329
C41.48062.41782.41782.41783.43293.43291.16213.4329
C51.48062.41782.41782.41783.43293.43293.43291.1621
N62.64271.16213.43293.43293.43294.31564.31564.3156
N72.64273.43291.16213.43293.43294.31564.31564.3156
N82.64273.43293.43291.16213.43294.31564.31564.3156
N92.64273.43293.43293.43291.16214.31564.31564.3156

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 B3LYP/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.521      
2 C 0.520      
3 C 0.520      
4 C 0.520      
5 C 0.520      
6 N -0.390      
7 N -0.390      
8 N -0.390      
9 N -0.390      


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 -56.398 0.000 0.000
y 0.000 -56.398 0.000
z 0.000 0.000 -56.398
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 7.605 0.000 0.000
y 0.000 7.605 0.000
z 0.000 0.000 7.605


<r2> (average value of r2) Å2
<r2> 283.391
(<r2>)1/2 16.834