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

using model chemistry: PBEPBE/STO-3G

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/STO-3G
 hartrees
Energy at 0K-403.694641
Energy at 298.15K-403.692624
HF Energy-403.694641
Nuclear repulsion energy311.226812
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/STO-3G
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 2274 2078 0.00      
2 A1 563 514 0.00      
3 E 543 496 0.00      
3 E 543 496 0.00      
4 E 103 95 0.00      
4 E 103 95 0.00      
5 T1 339 310 0.00      
5 T1 339 310 0.00      
5 T1 339 310 0.00      
6 T2 2256 2061 66.66      
6 T2 2256 2061 66.66      
6 T2 2256 2061 66.66      
7 T2 1031 942 21.32      
7 T2 1031 942 21.32      
7 T2 1031 942 21.32      
8 T2 535 489 0.16      
8 T2 535 489 0.16      
8 T2 535 489 0.16      
9 T2 137 125 5.92      
9 T2 137 125 5.92      
9 T2 137 125 5.92      

Unscaled Zero Point Vibrational Energy (zpe) 8511.1 cm-1
Scaled (by 0.9136) Zero Point Vibrational Energy (zpe) 7775.7 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 PBEPBE/STO-3G
ABC
0.04747 0.04747 0.04747

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.882 0.882 0.882
C3 -0.882 -0.882 0.882
C4 -0.882 0.882 -0.882
C5 0.882 -0.882 -0.882
N6 1.582 1.582 1.582
N7 -1.582 -1.582 1.582
N8 -1.582 1.582 -1.582
N9 1.582 -1.582 -1.582

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.52711.52711.52711.52712.74072.74072.74072.7407
C21.52712.49382.49382.49381.21363.55443.55443.5544
C31.52712.49382.49382.49383.55441.21363.55443.5544
C41.52712.49382.49382.49383.55443.55441.21363.5544
C51.52712.49382.49382.49383.55443.55443.55441.2136
N62.74071.21363.55443.55443.55444.47554.47554.4755
N72.74073.55441.21363.55443.55444.47554.47554.4755
N82.74073.55443.55441.21363.55444.47554.47554.4755
N92.74073.55443.55443.55441.21364.47554.47554.4755

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/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.026      
2 C 0.096      
3 C 0.096      
4 C 0.096      
5 C 0.096      
6 N -0.103      
7 N -0.103      
8 N -0.103      
9 N -0.103      


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 -51.773 0.000 0.000
y 0.000 -51.773 0.000
z 0.000 0.000 -51.773
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 5.658 0.000 0.000
y 0.000 5.658 0.000
z 0.000 0.000 5.658


<r2> (average value of r2) Å2
<r2> 298.623
(<r2>)1/2 17.281