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

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-65.824015
Energy at 298.15K-65.823377
HF Energy-65.824015
Nuclear repulsion energy151.279115
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 HF/CEP-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 2554 2302 0.00      
2 A1 613 552 0.00      
3 E 642 578 0.00      
3 E 642 578 0.00      
4 E 132 119 0.00      
4 E 132 119 0.00      
5 T1 415 374 0.00      
5 T1 415 374 0.00      
5 T1 415 374 0.00      
6 T2 2552 2300 0.27      
6 T2 2552 2300 0.27      
6 T2 2552 2300 0.27      
7 T2 1203 1085 82.92      
7 T2 1203 1085 82.92      
7 T2 1203 1085 82.92      
8 T2 620 558 0.08      
8 T2 620 558 0.08      
8 T2 620 558 0.08      
9 T2 174 157 14.19      
9 T2 174 157 14.19      
9 T2 174 157 14.19      

Unscaled Zero Point Vibrational Energy (zpe) 9801.6 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 8835.1 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 HF/CEP-31G
ABC
0.05054 0.05054 0.05054

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.862 0.862 0.862
C3 -0.862 -0.862 0.862
C4 -0.862 0.862 -0.862
C5 0.862 -0.862 -0.862
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
C11.49371.49371.49371.49372.64962.64962.64962.6496
C21.49372.43922.43922.43921.15593.44823.44823.4482
C31.49372.43922.43922.43923.44821.15593.44823.4482
C41.49372.43922.43922.43923.44823.44821.15593.4482
C51.49372.43922.43922.43923.44823.44823.44821.1559
N62.64961.15593.44823.44823.44824.32684.32684.3268
N72.64963.44821.15593.44823.44824.32684.32684.3268
N82.64963.44823.44821.15593.44824.32684.32684.3268
N92.64963.44823.44823.44821.15594.32684.32684.3268

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 HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.672      
2 C -0.635      
3 C -0.635      
4 C -0.635      
5 C -0.635      
6 N 0.467      
7 N 0.467      
8 N 0.467      
9 N 0.467      


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 -60.155 0.000 0.000
y 0.000 -60.155 0.000
z 0.000 0.000 -60.155
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 8.328 0.000 0.000
y 0.000 8.328 0.000
z 0.000 0.000 8.328


<r2> (average value of r2) Å2
<r2> 213.678
(<r2>)1/2 14.618