return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: BLYP/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 BLYP/6-31G
 hartrees
Energy at 0K-409.188974
Energy at 298.15K-409.187486
HF Energy-409.188974
Nuclear repulsion energy317.568230
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
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 2232 2215 0.00      
2 A1 559 555 0.00      
3 E 547 543 0.00      
3 E 547 543 0.00      
4 E 111 110 0.00      
4 E 111 110 0.00      
5 T1 330 328 0.00      
5 T1 330 328 0.00      
5 T1 330 328 0.00      
6 T2 2218 2201 8.80      
6 T2 2218 2201 8.80      
6 T2 2218 2201 8.80      
7 T2 994 986 41.03      
7 T2 994 986 41.03      
7 T2 994 986 41.03      
8 T2 540 535 0.53      
8 T2 540 535 0.53      
8 T2 540 535 0.53      
9 T2 145 143 8.95      
9 T2 145 143 8.95      
9 T2 145 143 8.95      

Unscaled Zero Point Vibrational Energy (zpe) 8392.2 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 8328.4 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 BLYP/6-31G
ABC
0.04937 0.04937 0.04937

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.867 0.867 0.867
C3 -0.867 -0.867 0.867
C4 -0.867 0.867 -0.867
C5 0.867 -0.867 -0.867
N6 1.550 1.550 1.550
N7 -1.550 -1.550 1.550
N8 -1.550 1.550 -1.550
N9 1.550 -1.550 -1.550

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.50221.50221.50221.50222.68512.68512.68512.6851
C21.50222.45312.45312.45311.18293.48653.48653.4865
C31.50222.45312.45312.45313.48651.18293.48653.4865
C41.50222.45312.45312.45313.48653.48651.18293.4865
C51.50222.45312.45312.45313.48653.48653.48651.1829
N62.68511.18293.48653.48653.48654.38474.38474.3847
N72.68513.48651.18293.48653.48654.38474.38474.3847
N82.68513.48653.48651.18293.48654.38474.38474.3847
N92.68513.48653.48653.48651.18294.38474.38474.3847

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 Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.132      
2 C 0.196      
3 C 0.196      
4 C 0.196      
5 C 0.196      
6 N -0.163      
7 N -0.163      
8 N -0.163      
9 N -0.163      


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 -56.943 0.000 0.000
y 0.000 -56.943 0.000
z 0.000 0.000 -56.943
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 8.767 0.000 0.000
y 0.000 8.767 0.000
z 0.000 0.000 8.767


<r2> (average value of r2) Å2
<r2> 291.596
(<r2>)1/2 17.076