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

using model chemistry: CCSD(T)/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)/cc-pVDZ
 hartrees
Energy at 0K-408.376892
Energy at 298.15K-408.375411
HF Energy-407.051622
Nuclear repulsion energy318.782992
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)/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 2282 2233        
2 A1 581 568        
3 E 550 539        
3 E 550 538        
4 E 106 104        
4 E 106 103        
5 T1 317 310        
5 T1 317 310        
5 T1 317 310        
6 T2 2279 2230        
6 T2 2279 2230        
6 T2 2279 2230        
7 T2 1078 1056        
7 T2 1078 1055        
7 T2 1078 1055        
8 T2 540 529        
8 T2 540 529        
8 T2 540 529        
9 T2 141 138        
9 T2 141 138        
9 T2 141 138        

Unscaled Zero Point Vibrational Energy (zpe) 8619.4 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 8436.6 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 CCSD(T)/cc-pVDZ
ABC
0.04973 0.04973 0.04973

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.865 0.865 0.865
C3 -0.865 -0.865 0.865
C4 -0.865 0.865 -0.865
C5 0.865 -0.865 -0.865
N6 1.544 1.544 1.544
N7 -1.544 -1.544 1.544
N8 -1.544 1.544 -1.544
N9 1.544 -1.544 -1.544

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.49821.49821.49821.49822.67482.67482.67482.6748
C21.49822.44652.44652.44651.17663.47433.47433.4743
C31.49822.44652.44652.44653.47431.17663.47433.4743
C41.49822.44652.44652.44653.47433.47431.17663.4743
C51.49822.44652.44652.44653.47433.47433.47431.1766
N62.67481.17663.47433.47433.47434.36794.36794.3679
N72.67483.47431.17663.47433.47434.36794.36794.3679
N82.67483.47433.47431.17663.47434.36794.36794.3679
N92.67483.47433.47433.47431.17664.36794.36794.3679

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