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

using model chemistry: CCSD(T)=FULL/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 CCSD(T)=FULL/cc-pVDZ
 hartrees
Energy at 0K-408.396041
Energy at 298.15K-408.394577
HF Energy-407.052026
Nuclear repulsion energy319.037330
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 CCSD(T)=FULL/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 2286 2202        
2 E 107 103        
3 E 106 103        
3 T1 319 307        
4 T1 319 307        
4 T1 319 307        
5 T2 2283 2199        
5 T2 2283 2199        
5 T2 2283 2199        
6 T2 1082 1042        
6 T2 1082 1042        
6 T2 1082 1042        
7 T2 582 561        
7 T2 552 532        
7 T2 552 532        
8 T2 542 522        
8 T2 542 522        
8 T2 542 522        
9 T2 141 136        
9 T2 141 136        
9 T2 141 136        

Unscaled Zero Point Vibrational Energy (zpe) 8640.9 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 8323.0 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 CCSD(T)=FULL/cc-pVDZ
ABC
0.04982 0.04982 0.04982

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/cc-pVDZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.864 0.864 0.864
C3 -0.864 -0.864 0.864
C4 -0.864 0.864 -0.864
C5 0.864 -0.864 -0.864
N6 1.543 1.543 1.543
N7 -1.543 -1.543 1.543
N8 -1.543 1.543 -1.543
N9 1.543 -1.543 -1.543

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.49651.49651.49651.49652.67242.67242.67242.6724
C21.49652.44372.44372.44371.17593.47093.47093.4709
C31.49652.44372.44372.44373.47091.17593.47093.4709
C41.49652.44372.44372.44373.47093.47091.17593.4709
C51.49652.44372.44372.44373.47093.47093.47091.1759
N62.67241.17593.47093.47093.47094.36404.36404.3640
N72.67243.47091.17593.47093.47094.36404.36404.3640
N82.67243.47093.47091.17593.47094.36404.36404.3640
N92.67243.47093.47093.47091.17594.36404.36404.3640

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