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

using model chemistry: B2PLYP/6-311G*

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/6-311G*
 hartrees
Energy at 0K-409.149134
Energy at 298.15K-409.147856
HF Energy-408.698463
Nuclear repulsion energy322.710200
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/6-311G*
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 2298 2298 0.00      
2 A1 586 586 0.00      
3 E 574 574 0.00      
3 E 574 574 0.00      
4 E 113 113 0.00      
4 E 113 113 0.00      
5 T1 344 344 0.00      
5 T1 344 344 0.00      
5 T1 344 344 0.00      
6 T2 2294 2294 15.63      
6 T2 2294 2294 15.63      
6 T2 2294 2294 15.63      
7 T2 1080 1080 34.83      
7 T2 1080 1080 34.83      
7 T2 1080 1080 34.83      
8 T2 556 556 0.00      
8 T2 556 556 0.00      
8 T2 556 556 0.00      
9 T2 148 148 12.37      
9 T2 148 148 12.37      
9 T2 148 148 12.37      

Unscaled Zero Point Vibrational Energy (zpe) 8761.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8761.8 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/6-311G*
ABC
0.05094 0.05094 0.05094

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-311G*

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 1.525 1.525 1.525
N7 -1.525 -1.525 1.525
N8 -1.525 1.525 -1.525
N9 1.525 -1.525 -1.525

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48231.48231.48231.48232.64172.64172.64172.6417
C21.48232.42062.42062.42061.15943.43313.43313.4331
C31.48232.42062.42062.42063.43311.15943.43313.4331
C41.48232.42062.42062.42063.43313.43311.15943.4331
C51.48232.42062.42062.42063.43313.43313.43311.1594
N62.64171.15943.43313.43313.43314.31394.31394.3139
N72.64173.43311.15943.43313.43314.31394.31394.3139
N82.64173.43313.43311.15943.43314.31394.31394.3139
N92.64173.43313.43313.43311.15944.31394.31394.3139

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/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.233      
2 C 0.218      
3 C 0.218      
4 C 0.218      
5 C 0.218      
6 N -0.159      
7 N -0.159      
8 N -0.159      
9 N -0.159      


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 -57.082 0.000 0.000
y 0.000 -57.082 0.000
z 0.000 0.000 -57.082
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 8.770 0.000 0.000
y 0.000 8.770 0.000
z 0.000 0.000 8.770


<r2> (average value of r2) Å2
<r2> 283.788
(<r2>)1/2 16.846