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

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

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/6-31+G**
 hartrees
Energy at 0K-408.322466
Energy at 298.15K-408.321055
HF Energy-407.033131
Nuclear repulsion energy320.794755
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/6-31+G**
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 2350 2221 0.00      
2 A1 587 555 0.00      
3 E 558 528 0.00      
3 E 558 528 0.00      
4 E 109 103 0.00      
4 E 109 103 0.00      
5 T1 321 304 0.00      
5 T1 321 304 0.00      
5 T1 321 304 0.00      
6 T2 2346 2218 12.03      
6 T2 2346 2218 12.03      
6 T2 2346 2218 12.03      
7 T2 1103 1043 38.45      
7 T2 1103 1043 38.45      
7 T2 1103 1043 38.45      
8 T2 552 522 0.04      
8 T2 552 522 0.04      
8 T2 552 522 0.04      
9 T2 144 136 13.11      
9 T2 144 136 13.11      
9 T2 144 136 13.11      

Unscaled Zero Point Vibrational Energy (zpe) 8833.9 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 8351.6 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 QCISD/6-31+G**
ABC
0.05035 0.05035 0.05035

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.861 0.861 0.861
C3 -0.861 -0.861 0.861
C4 -0.861 0.861 -0.861
C5 0.861 -0.861 -0.861
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
C11.49051.49051.49051.49052.65762.65762.65762.6576
C21.49052.43402.43402.43401.16703.45333.45333.4533
C31.49052.43402.43402.43403.45331.16703.45333.4533
C41.49052.43402.43402.43403.45333.45331.16703.4533
C51.49052.43402.43402.43403.45333.45333.45331.1670
N62.65761.16703.45333.45333.45334.33984.33984.3398
N72.65763.45331.16703.45333.45334.33984.33984.3398
N82.65763.45333.45331.16703.45334.33984.33984.3398
N92.65763.45333.45333.45331.16704.33984.33984.3398

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