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

using model chemistry: HF/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-407.085915
Energy at 298.15K-407.085165
HF Energy-407.085915
Nuclear repulsion energy325.316403
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/aug-cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 2630 2394 0.00      
2 A1 618 563 0.00      
3 E 642 584 0.00      
3 E 642 584 0.00      
4 E 126 115 0.00      
4 E 126 115 0.00      
5 T1 383 349 0.00      
5 T1 383 349 0.00      
5 T1 383 349 0.00      
6 T2 2624 2389 1.19      
6 T2 2624 2389 1.19      
6 T2 2624 2389 1.19      
7 T2 1187 1081 51.33      
7 T2 1187 1081 51.33      
7 T2 1187 1081 51.33      
8 T2 613 558 2.11      
8 T2 613 558 2.11      
8 T2 613 558 2.11      
9 T2 166 152 18.51      
9 T2 166 152 18.51      
9 T2 166 152 18.51      

Unscaled Zero Point Vibrational Energy (zpe) 9851.9 cm-1
Scaled (by 0.9106) Zero Point Vibrational Energy (zpe) 8971.2 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/aug-cc-pVDZ
ABC
0.05159 0.05159 0.05159

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVDZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.858 0.858 0.858
C3 -0.858 -0.858 0.858
C4 -0.858 0.858 -0.858
C5 0.858 -0.858 -0.858
N6 1.512 1.512 1.512
N7 -1.512 -1.512 1.512
N8 -1.512 1.512 -1.512
N9 1.512 -1.512 -1.512

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48651.48651.48651.48652.61862.61862.61862.6186
C21.48652.42742.42742.42741.13213.41493.41493.4149
C31.48652.42742.42742.42743.41491.13213.41493.4149
C41.48652.42742.42742.42743.41493.41491.13213.4149
C51.48652.42742.42742.42743.41493.41493.41491.1321
N62.61861.13213.41493.41493.41494.27614.27614.2761
N72.61863.41491.13213.41493.41494.27614.27614.2761
N82.61863.41493.41491.13213.41494.27614.27614.2761
N92.61863.41493.41493.41491.13214.27614.27614.2761

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/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.003      
2 C 0.009      
3 C 0.009      
4 C 0.009      
5 C 0.009      
6 N -0.260      
7 N -0.260      
8 N -0.260      
9 N -0.260      


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 -58.488 0.000 0.000
y 0.000 -58.488 0.000
z 0.000 0.000 -58.488
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 9.774 0.000 0.000
y 0.000 9.774 0.000
z 0.000 0.000 9.774


<r2> (average value of r2) Å2
<r2> 281.551
(<r2>)1/2 16.779