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

using model chemistry: BLYP/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at BLYP/6-31G(2df,p)
 hartrees
Energy at 0K-409.330790
Energy at 298.15K-409.329353
HF Energy-409.330790
Nuclear repulsion energy320.613872
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 BLYP/6-31G(2df,p)
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 2284 2271 0.00      
2 A1 566 563 0.00      
3 E 548 545 0.00      
3 E 548 545 0.00      
4 E 110 110 0.00      
4 E 110 110 0.00      
5 T1 338 337 0.00      
5 T1 338 337 0.00      
5 T1 338 337 0.00      
6 T2 2271 2259 9.70      
6 T2 2271 2259 9.70      
6 T2 2271 2259 9.70      
7 T2 1008 1003 30.30      
7 T2 1008 1003 30.30      
7 T2 1008 1003 30.30      
8 T2 535 532 0.03      
8 T2 535 532 0.03      
8 T2 535 532 0.03      
9 T2 146 145 12.07      
9 T2 146 145 12.07      
9 T2 146 145 12.07      

Unscaled Zero Point Vibrational Energy (zpe) 8531.0 cm-1
Scaled (by 0.9945) Zero Point Vibrational Energy (zpe) 8484.1 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 BLYP/6-31G(2df,p)
ABC
0.05028 0.05028 0.05028

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G(2df,p)

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 1.535 1.535 1.535
N7 -1.535 -1.535 1.535
N8 -1.535 1.535 -1.535
N9 1.535 -1.535 -1.535

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.49281.49281.49281.49282.65892.65892.65892.6589
C21.49282.43782.43782.43781.16603.45613.45613.4561
C31.49282.43782.43782.43783.45611.16603.45613.4561
C41.49282.43782.43782.43783.45613.45611.16603.4561
C51.49282.43782.43782.43783.45613.45613.45611.1660
N62.65891.16603.45613.45613.45614.34194.34194.3419
N72.65893.45611.16603.45613.45614.34194.34194.3419
N82.65893.45613.45611.16603.45614.34194.34194.3419
N92.65893.45613.45613.45611.16604.34194.34194.3419

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 BLYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.321      
2 C 0.376      
3 C 0.376      
4 C 0.376      
5 C 0.376      
6 N -0.296      
7 N -0.296      
8 N -0.296      
9 N -0.296      


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 -55.895 0.000 0.000
y 0.000 -55.895 0.000
z 0.000 0.000 -55.895
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 9.438 0.000 0.000
y 0.000 9.438 0.000
z 0.000 0.000 9.438


<r2> (average value of r2) Å2
<r2> 286.344
(<r2>)1/2 16.922