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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-408.817039
Energy at 298.15K-408.807763
HF Energy-407.040113
Nuclear repulsion energy325.769958
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 CBS-Q
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 2660 2660 0.00      
2 A1 619 619 0.00      
3 E 645 645 0.00      
3 E 645 645 0.00      
4 E 126 126 0.00      
4 E 126 126 0.00      
5 T1 392 392 0.00      
5 T1 392 392 0.00      
5 T1 392 392 0.00      
6 T2 2655 2655 0.47      
6 T2 2655 2655 0.47      
6 T2 2655 2655 0.47      
7 T2 1194 1194 53.90      
7 T2 1194 1194 53.90      
7 T2 1194 1194 53.90      
8 T2 615 615 1.75      
8 T2 615 615 1.75      
8 T2 615 615 1.75      
9 T2 167 167 17.85      
9 T2 167 167 17.85      
9 T2 167 167 17.85      

Unscaled Zero Point Vibrational Energy (zpe) 9943.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 9943.5 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 CBS-Q
ABC
0.05018 0.05018 0.05018

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

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 1.510 1.510 1.510
N7 -1.510 -1.510 1.510
N8 -1.510 1.510 -1.510
N9 1.510 -1.510 -1.510

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48451.48451.48451.48452.61492.61492.61492.6149
C21.48452.42422.42422.42421.13043.41023.41023.4102
C31.48452.42422.42422.42423.41021.13043.41023.4102
C41.48452.42422.42422.42423.41023.41021.13043.4102
C51.48452.42422.42422.42423.41023.41023.41021.1304
N62.61491.13043.41023.41023.41024.27014.27014.2701
N72.61493.41021.13043.41023.41024.27014.27014.2701
N82.61493.41023.41021.13043.41024.27014.27014.2701
N92.61493.41023.41023.41021.13044.27014.27014.2701

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