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

using model chemistry: PBE1PBE/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at PBE1PBE/6-31+G**
 hartrees
Energy at 0K-408.927507
Energy at 298.15K-408.926217
HF Energy-408.927507
Nuclear repulsion energy323.081858
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 PBE1PBE/6-31+G**
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 2416 2308 0.00      
2 A1 592 566 0.00      
3 E 572 547 0.00      
3 E 572 547 0.00      
4 E 111 106 0.00      
4 E 111 106 0.00      
5 T1 345 330 0.00      
5 T1 345 330 0.00      
5 T1 345 330 0.00      
6 T2 2409 2302 6.62      
6 T2 2409 2302 6.62      
6 T2 2409 2302 6.62      
7 T2 1096 1047 37.69      
7 T2 1096 1047 37.69      
7 T2 1096 1047 37.69      
8 T2 555 530 0.00      
8 T2 555 530 0.00      
8 T2 555 530 0.00      
9 T2 146 139 12.63      
9 T2 146 139 12.63      
9 T2 146 139 12.63      

Unscaled Zero Point Vibrational Energy (zpe) 9012.9 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 8610.0 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 PBE1PBE/6-31+G**
ABC
0.05105 0.05105 0.05105

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31+G**

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.856 0.856 0.856
C3 -0.856 -0.856 0.856
C4 -0.856 0.856 -0.856
C5 0.856 -0.856 -0.856
N6 1.523 1.523 1.523
N7 -1.523 -1.523 1.523
N8 -1.523 1.523 -1.523
N9 1.523 -1.523 -1.523

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48201.48201.48201.48202.63852.63852.63852.6385
C21.48202.42002.42002.42001.15653.43003.43003.4300
C31.48202.42002.42002.42003.43001.15653.43003.4300
C41.48202.42002.42002.42003.43003.43001.15653.4300
C51.48202.42002.42002.42003.43003.43003.43001.1565
N62.63851.15653.43003.43003.43004.30864.30864.3086
N72.63853.43001.15653.43003.43004.30864.30864.3086
N82.63853.43003.43001.15653.43004.30864.30864.3086
N92.63853.43003.43003.43001.15654.30864.30864.3086

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 PBE1PBE/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.580      
2 C 0.177      
3 C 0.177      
4 C 0.177      
5 C 0.177      
6 N -0.322      
7 N -0.322      
8 N -0.322      
9 N -0.322      


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 -57.287 0.000 0.000
y 0.000 -57.287 0.000
z 0.000 0.000 -57.287
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 9.899 0.000 0.000
y 0.000 9.899 0.000
z 0.000 0.000 9.899


<r2> (average value of r2) Å2
<r2> 283.414
(<r2>)1/2 16.835