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

using model chemistry: QCISD(T)/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 QCISD(T)/TZVP
 hartrees
Energy at 0K-408.534225
Energy at 298.15K-408.532728
HF Energy-407.144914
Nuclear repulsion energy321.856982
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 QCISD(T)/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 2301 2216        
2 E 105 101        
3 E 105 101        
3 T1 311 300        
4 T1 311 299        
4 T1 311 299        
5 T2 2297 2212        
5 T2 2297 2212        
5 T2 2297 2212        
6 T2 1082 1042        
6 T2 1082 1042        
6 T2 1082 1042        
7 T2 583 561        
7 T2 547 526        
7 T2 547 526        
8 T2 547 526        
8 T2 546 526        
8 T2 546 526        
9 T2 140 135        
9 T2 140 135        
9 T2 139 134        

Unscaled Zero Point Vibrational Energy (zpe) 8655.9 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 8337.3 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 QCISD(T)/TZVP
ABC
0.05067 0.05067 0.05067

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/TZVP

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.858 0.858 0.858
C3 -0.858 -0.858 0.858
C4 -0.858 0.858 -0.858
C5 0.858 -0.858 -0.858
N6 1.529 1.529 1.529
N7 -1.529 -1.529 1.529
N8 -1.529 1.529 -1.529
N9 1.529 -1.529 -1.529

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48601.48601.48601.48602.64892.64892.64892.6489
C21.48602.42672.42672.42671.16293.44233.44233.4423
C31.48602.42672.42672.42673.44231.16293.44233.4423
C41.48602.42672.42672.42673.44233.44231.16293.4423
C51.48602.42672.42672.42673.44233.44233.44231.1629
N62.64891.16293.44233.44233.44234.32574.32574.3257
N72.64893.44231.16293.44233.44234.32574.32574.3257
N82.64893.44233.44231.16293.44234.32574.32574.3257
N92.64893.44233.44233.44231.16294.32574.32574.3257

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