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

using model chemistry: QCISD/6-31G**

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/6-31G**
 hartrees
Energy at 0K-408.303535
Energy at 298.15K-408.302183
HF Energy-407.025078
Nuclear repulsion energy320.934875
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/6-31G**
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 2357 2219 0.00      
2 A1 588 554 0.00      
3 E 566 533 0.00      
3 E 566 533 0.00      
4 E 111 105 0.00      
4 E 111 105 0.00      
5 T1 330 311 0.00      
5 T1 330 311 0.00      
5 T1 330 311 0.00      
6 T2 2354 2216 12.07      
6 T2 2354 2216 12.07      
6 T2 2354 2216 12.07      
7 T2 1109 1044 34.73      
7 T2 1109 1044 34.73      
7 T2 1109 1044 34.73      
8 T2 556 524 0.00      
8 T2 556 524 0.00      
8 T2 556 524 0.00      
9 T2 146 137 13.15      
9 T2 146 137 13.15      
9 T2 146 137 13.15      

Unscaled Zero Point Vibrational Energy (zpe) 8892.5 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 8371.4 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/6-31G**
ABC
0.05039 0.05039 0.05039

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G**

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.860 0.860 0.860
C3 -0.860 -0.860 0.860
C4 -0.860 0.860 -0.860
C5 0.860 -0.860 -0.860
N6 1.534 1.534 1.534
N7 -1.534 -1.534 1.534
N8 -1.534 1.534 -1.534
N9 1.534 -1.534 -1.534

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48971.48971.48971.48972.65642.65642.65642.6564
C21.48972.43272.43272.43271.16673.45173.45173.4517
C31.48972.43272.43272.43273.45171.16673.45173.4517
C41.48972.43272.43272.43273.45173.45171.16673.4517
C51.48972.43272.43272.43273.45173.45173.45171.1667
N62.65641.16673.45173.45173.45174.33794.33794.3379
N72.65643.45171.16673.45173.45174.33794.33794.3379
N82.65643.45173.45171.16673.45174.33794.33794.3379
N92.65643.45173.45173.45171.16674.33794.33794.3379

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