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

using model chemistry: B2PLYP/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 B2PLYP/6-31G*
 hartrees
Energy at 0K-409.035446
Energy at 298.15K-409.034072
HF Energy-408.600499
Nuclear repulsion energy321.513031
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 B2PLYP/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 2307 2190 0.00      
2 A1 586 556 0.00      
3 E 563 535 0.00      
3 E 563 535 0.00      
4 E 111 105 0.00      
4 E 111 105 0.00      
5 T1 338 321 0.00      
5 T1 338 321 0.00      
5 T1 338 321 0.00      
6 T2 2303 2186 15.30      
6 T2 2303 2186 15.30      
6 T2 2303 2186 15.30      
7 T2 1084 1029 35.34      
7 T2 1084 1029 35.34      
7 T2 1084 1029 35.34      
8 T2 552 524 0.00      
8 T2 552 524 0.00      
8 T2 552 524 0.00      
9 T2 146 138 12.59      
9 T2 146 138 12.59      
9 T2 146 138 12.59      

Unscaled Zero Point Vibrational Energy (zpe) 8754.4 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 8309.7 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 B2PLYP/6-31G*
ABC
0.05060 0.05060 0.05060

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.857 0.857 0.857
C3 -0.857 -0.857 0.857
C4 -0.857 0.857 -0.857
C5 0.857 -0.857 -0.857
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
C11.48501.48501.48501.48502.65202.65202.65202.6520
C21.48502.42492.42492.42491.16703.44433.44433.4443
C31.48502.42492.42492.42493.44431.16703.44433.4443
C41.48502.42492.42492.42493.44433.44431.16703.4443
C51.48502.42492.42492.42493.44433.44433.44431.1670
N62.65201.16703.44433.44433.44434.33064.33064.3306
N72.65203.44431.16703.44433.44434.33064.33064.3306
N82.65203.44433.44431.16703.44434.33064.33064.3306
N92.65203.44433.44433.44431.16704.33064.33064.3306

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 B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.159      
2 C 0.391      
3 C 0.391      
4 C 0.391      
5 C 0.391      
6 N -0.351      
7 N -0.351      
8 N -0.351      
9 N -0.351      


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 -56.455 0.000 0.000
y 0.000 -56.455 0.000
z 0.000 0.000 -56.455
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 8.461 0.000 0.000
y 0.000 8.461 0.000
z 0.000 0.000 8.461


<r2> (average value of r2) Å2
<r2> 285.104
(<r2>)1/2 16.885