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

using model chemistry: PBEPBE/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at PBEPBE/6-31G
 hartrees
Energy at 0K-408.803933
Energy at 298.15K-408.802499
HF Energy-408.803933
Nuclear repulsion energy318.601817
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/6-31G
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 2250 2219 0.00      
2 A1 570 562 0.00      
3 E 552 544 0.00      
3 E 552 544 0.00      
4 E 110 109 0.00      
4 E 110 109 0.00      
5 T1 337 332 0.00      
5 T1 337 332 0.00      
5 T1 337 332 0.00      
6 T2 2240 2209 7.21      
6 T2 2240 2209 7.21      
6 T2 2240 2209 7.21      
7 T2 1018 1004 35.08      
7 T2 1018 1004 35.08      
7 T2 1018 1004 35.08      
8 T2 544 537 0.88      
8 T2 544 537 0.88      
8 T2 544 537 0.88      
9 T2 144 142 8.56      
9 T2 144 142 8.56      
9 T2 144 142 8.56      

Unscaled Zero Point Vibrational Energy (zpe) 8496.7 cm-1
Scaled (by 0.9862) Zero Point Vibrational Energy (zpe) 8379.4 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/6-31G
ABC
0.04972 0.04972 0.04972

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.863 0.863 0.863
C3 -0.863 -0.863 0.863
C4 -0.863 0.863 -0.863
C5 0.863 -0.863 -0.863
N6 1.545 1.545 1.545
N7 -1.545 -1.545 1.545
N8 -1.545 1.545 -1.545
N9 1.545 -1.545 -1.545

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.49431.49431.49431.49432.67682.67682.67682.6768
C21.49432.44032.44032.44031.18253.47353.47353.4735
C31.49432.44032.44032.44033.47351.18253.47353.4735
C41.49432.44032.44032.44033.47353.47351.18253.4735
C51.49432.44032.44032.44033.47353.47353.47351.1825
N62.67681.18253.47353.47353.47354.37124.37124.3712
N72.67683.47351.18253.47353.47354.37124.37124.3712
N82.67683.47353.47351.18253.47354.37124.37124.3712
N92.67683.47353.47353.47351.18254.37124.37124.3712

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/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.250      
2 C 0.255      
3 C 0.255      
4 C 0.255      
5 C 0.255      
6 N -0.193      
7 N -0.193      
8 N -0.193      
9 N -0.193      


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 -56.741 0.000 0.000
y 0.000 -56.741 0.000
z 0.000 0.000 -56.741
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 8.779 0.000 0.000
y 0.000 8.779 0.000
z 0.000 0.000 8.779


<r2> (average value of r2) Å2
<r2> 289.665
(<r2>)1/2 17.020