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: B3PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at B3PW91/cc-pVTZ
 hartrees
Energy at 0K-409.349250
Energy at 298.15K-409.348010
HF Energy-409.349250
Nuclear repulsion energy324.444070
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 B3PW91/cc-pVTZ
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 2390 2299 0.00      
2 A1 588 565 0.00      
3 E 575 553 0.00      
3 E 575 553 0.00      
4 E 112 107 0.00      
4 E 112 107 0.00      
5 T1 348 334 0.00      
5 T1 348 334 0.00      
5 T1 348 334 0.00      
6 T2 2382 2290 7.03      
6 T2 2382 2290 7.03      
6 T2 2382 2290 7.03      
7 T2 1077 1036 31.12      
7 T2 1077 1036 31.12      
7 T2 1077 1036 31.12      
8 T2 558 537 0.15      
8 T2 558 537 0.15      
8 T2 558 537 0.15      
9 T2 147 142 13.27      
9 T2 147 142 13.27      
9 T2 147 142 13.27      

Unscaled Zero Point Vibrational Energy (zpe) 8942.7 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 8599.3 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 B3PW91/cc-pVTZ
ABC
0.05144 0.05144 0.05144

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.854 0.854 0.854
C3 -0.854 -0.854 0.854
C4 -0.854 0.854 -0.854
C5 0.854 -0.854 -0.854
N6 1.517 1.517 1.517
N7 -1.517 -1.517 1.517
N8 -1.517 1.517 -1.517
N9 1.517 -1.517 -1.517

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.47901.47901.47901.47902.62702.62702.62702.6270
C21.47902.41522.41522.41521.14803.41743.41743.4174
C31.47902.41522.41522.41523.41741.14803.41743.4174
C41.47902.41522.41522.41523.41743.41741.14803.4174
C51.47902.41522.41522.41523.41743.41743.41741.1480
N62.62701.14803.41743.41743.41744.28984.28984.2898
N72.62703.41741.14803.41743.41744.28984.28984.2898
N82.62703.41743.41741.14803.41744.28984.28984.2898
N92.62703.41743.41743.41741.14804.28984.28984.2898

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 B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.002      
2 C 0.018      
3 C 0.018      
4 C 0.018      
5 C 0.018      
6 N -0.017      
7 N -0.017      
8 N -0.017      
9 N -0.017      


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 -56.619 0.000 0.000
y 0.000 -56.619 0.000
z 0.000 0.000 -56.619
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 9.602 0.000 0.000
y 0.000 9.602 0.000
z 0.000 0.000 9.602


<r2> (average value of r2) Å2
<r2> 281.087
(<r2>)1/2 16.766