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

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-409.432504
Energy at 298.15K-409.431197
HF Energy-409.432504
Nuclear repulsion energy322.652794
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 TPSSh/6-31G(2df,p)
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 2359 2276 0.00      
2 A1 583 563 0.00      
3 E 566 547 0.00      
3 E 566 547 0.00      
4 E 110 107 0.00      
4 E 110 107 0.00      
5 T1 349 337 0.00      
5 T1 349 337 0.00      
5 T1 349 337 0.00      
6 T2 2349 2267 7.54      
6 T2 2349 2267 7.54      
6 T2 2349 2267 7.54      
7 T2 1055 1018 32.91      
7 T2 1055 1018 32.91      
7 T2 1055 1018 32.91      
8 T2 551 532 0.04      
8 T2 551 532 0.04      
8 T2 551 532 0.04      
9 T2 146 141 12.67      
9 T2 146 141 12.67      
9 T2 146 141 12.67      

Unscaled Zero Point Vibrational Energy (zpe) 8824.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 8515.6 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 TPSSh/6-31G(2df,p)
ABC
0.05090 0.05090 0.05090

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.857 0.857 0.857
C3 -0.857 -0.857 0.857
C4 -0.857 0.857 -0.857
C5 0.857 -0.857 -0.857
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
C11.48381.48381.48381.48382.63842.63842.63842.6384
C21.48382.42312.42312.42311.15463.43123.43123.4312
C31.48382.42312.42312.42313.43121.15463.43123.4312
C41.48382.42312.42312.42313.43123.43121.15463.4312
C51.48382.42312.42312.42313.43123.43123.43121.1546
N62.63841.15463.43123.43123.43124.30854.30854.3085
N72.63843.43121.15463.43123.43124.30854.30854.3085
N82.63843.43123.43121.15463.43124.30854.30854.3085
N92.63843.43123.43123.43121.15464.30854.30854.3085

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