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: PBE1PBE/STO-3G

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/STO-3G
 hartrees
Energy at 0K-403.718145
Energy at 298.15K-403.716487
HF Energy-403.718145
Nuclear repulsion energy314.989460
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/STO-3G
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 2429 2143 0.00      
2 A1 594 524 0.00      
3 E 581 513 0.00      
3 E 581 513 0.00      
4 E 112 98 0.00      
4 E 112 98 0.00      
5 T1 368 325 0.00      
5 T1 368 325 0.00      
5 T1 368 325 0.00      
6 T2 2416 2131 63.95      
6 T2 2416 2131 63.95      
6 T2 2416 2131 63.95      
7 T2 1118 986 25.44      
7 T2 1118 986 25.44      
7 T2 1118 986 25.44      
8 T2 571 503 0.01      
8 T2 571 503 0.01      
8 T2 571 503 0.01      
9 T2 147 130 7.54      
9 T2 147 130 7.54      
9 T2 147 130 7.54      

Unscaled Zero Point Vibrational Energy (zpe) 9133.5 cm-1
Scaled (by 0.8821) Zero Point Vibrational Energy (zpe) 8056.7 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/STO-3G
ABC
0.04859 0.04859 0.04859

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/STO-3G

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.874 0.874 0.874
C3 -0.874 -0.874 0.874
C4 -0.874 0.874 -0.874
C5 0.874 -0.874 -0.874
N6 1.563 1.563 1.563
N7 -1.563 -1.563 1.563
N8 -1.563 1.563 -1.563
N9 1.563 -1.563 -1.563

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.51331.51331.51331.51332.70722.70722.70722.7072
C21.51332.47122.47122.47121.19403.51433.51433.5143
C31.51332.47122.47122.47123.51431.19403.51433.5143
C41.51332.47122.47122.47123.51433.51431.19403.5143
C51.51332.47122.47122.47123.51433.51433.51431.1940
N62.70721.19403.51433.51433.51434.42094.42094.4209
N72.70723.51431.19403.51433.51434.42094.42094.4209
N82.70723.51433.51431.19403.51434.42094.42094.4209
N92.70723.51433.51433.51431.19404.42094.42094.4209

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/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.032      
2 C 0.099      
3 C 0.099      
4 C 0.099      
5 C 0.099      
6 N -0.107      
7 N -0.107      
8 N -0.107      
9 N -0.107      


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 -52.234 0.000 0.000
y 0.000 -52.234 0.000
z 0.000 0.000 -52.234
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 5.229 0.000 0.000
y 0.000 5.229 0.000
z 0.000 0.000 5.229


<r2> (average value of r2) Å2
<r2> 292.801
(<r2>)1/2 17.111