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: mPW1PW91/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 mPW1PW91/cc-pVDZ
 hartrees
Energy at 0K-409.307596
Energy at 298.15K-409.306395
HF Energy-409.307596
Nuclear repulsion energy323.160947
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 mPW1PW91/cc-pVDZ
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 2415 2315 0.00      
2 A1 598 573 0.00      
3 E 578 554 0.00      
3 E 578 554 0.00      
4 E 113 108 0.00      
4 E 113 108 0.00      
5 T1 352 338 0.00      
5 T1 352 338 0.00      
5 T1 352 338 0.00      
6 T2 2409 2309 5.36      
6 T2 2409 2309 5.36      
6 T2 2409 2309 5.36      
7 T2 1101 1056 35.22      
7 T2 1101 1056 35.22      
7 T2 1101 1056 35.22      
8 T2 561 538 0.00      
8 T2 561 538 0.00      
8 T2 561 538 0.00      
9 T2 148 142 11.51      
9 T2 148 142 11.51      
9 T2 148 142 11.51      

Unscaled Zero Point Vibrational Energy (zpe) 9055.5 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 8677.9 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 mPW1PW91/cc-pVDZ
ABC
0.05108 0.05108 0.05108

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVDZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.855 0.855 0.855
C3 -0.855 -0.855 0.855
C4 -0.855 0.855 -0.855
C5 0.855 -0.855 -0.855
N6 1.523 1.523 1.523
N7 -1.523 -1.523 1.523
N8 -1.523 1.523 -1.523
N9 1.523 -1.523 -1.523

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48131.48131.48131.48132.63792.63792.63792.6379
C21.48132.41902.41902.41901.15653.42903.42903.4290
C31.48132.41902.41902.41903.42901.15653.42903.4290
C41.48132.41902.41902.41903.42903.42901.15653.4290
C51.48132.41902.41902.41903.42903.42903.42901.1565
N62.63791.15653.42903.42903.42904.30764.30764.3076
N72.63793.42901.15653.42903.42904.30764.30764.3076
N82.63793.42903.42901.15653.42904.30764.30764.3076
N92.63793.42903.42903.42901.15654.30764.30764.3076

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 mPW1PW91/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.329      
2 C 0.149      
3 C 0.149      
4 C 0.149      
5 C 0.149      
6 N -0.066      
7 N -0.066      
8 N -0.066      
9 N -0.066      


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 -55.831 0.000 0.000
y 0.000 -55.831 0.000
z 0.000 0.000 -55.831
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 8.671 0.000 0.000
y 0.000 8.671 0.000
z 0.000 0.000 8.671


<r2> (average value of r2) Å2
<r2> 282.370
(<r2>)1/2 16.804