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

using model chemistry: CCSD/TZVP

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/TZVP
 hartrees
Energy at 0K-408.460968
Energy at 298.15K-408.459668
HF Energy-407.150903
Nuclear repulsion energy323.105836
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/TZVP
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 2379 2271 0.00      
2 A1 592 565 0.00      
3 E 568 542 0.00      
3 E 568 542 0.00      
4 E 112 107 0.00      
4 E 112 107 0.00      
5 T1 329 314 0.00      
5 T1 329 314 0.00      
5 T1 329 314 0.00      
6 T2 2374 2266 13.63      
6 T2 2374 2266 13.63      
6 T2 2374 2266 13.63      
7 T2 1111 1060 35.67      
7 T2 1111 1060 35.67      
7 T2 1111 1060 35.67      
8 T2 563 537 0.01      
8 T2 563 537 0.01      
8 T2 563 537 0.01      
9 T2 146 139 13.16      
9 T2 146 139 13.16      
9 T2 146 139 13.16      

Unscaled Zero Point Vibrational Energy (zpe) 8949.4 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 8541.3 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 CCSD/TZVP
ABC
0.05104 0.05104 0.05104

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

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
C11.48361.48361.48361.48362.63802.63802.63802.6380
C21.48362.42272.42272.42271.15443.43073.43073.4307
C31.48362.42272.42272.42273.43071.15443.43073.4307
C41.48362.42272.42272.42273.43073.43071.15443.4307
C51.48362.42272.42272.42273.43073.43073.43071.1544
N62.63801.15443.43073.43073.43074.30794.30794.3079
N72.63803.43071.15443.43073.43074.30794.30794.3079
N82.63803.43073.43071.15443.43074.30794.30794.3079
N92.63803.43073.43073.43071.15444.30794.30794.3079

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