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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-408.509436
Energy at 298.15K-408.508063
HF Energy-407.048712
Nuclear repulsion energy321.806413
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 MP2/6-31G(2df,p)
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 2188 2067 0.00      
2 A1 590 557 0.00      
3 E 560 529 0.00      
3 E 560 529 0.00      
4 E 110 104 0.00      
4 E 110 104 0.00      
5 T1 335 316 0.00      
5 T1 335 316 0.00      
5 T1 335 316 0.00      
6 T2 2193 2071 27.76      
6 T2 2193 2071 27.76      
6 T2 2193 2071 27.76      
7 T2 1086 1026 24.52      
7 T2 1086 1026 24.52      
7 T2 1086 1026 24.52      
8 T2 547 516 0.01      
8 T2 547 516 0.01      
8 T2 547 516 0.01      
9 T2 143 135 13.60      
9 T2 143 135 13.60      
9 T2 143 135 13.60      

Unscaled Zero Point Vibrational Energy (zpe) 8513.5 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 8041.0 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 MP2/6-31G(2df,p)
ABC
0.05076 0.05076 0.05076

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.852 0.852 0.852
C3 -0.852 -0.852 0.852
C4 -0.852 0.852 -0.852
C5 0.852 -0.852 -0.852
N6 1.530 1.530 1.530
N7 -1.530 -1.530 1.530
N8 -1.530 1.530 -1.530
N9 1.530 -1.530 -1.530

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.47581.47581.47581.47582.65082.65082.65082.6508
C21.47582.41002.41002.41001.17503.43693.43693.4369
C31.47582.41002.41002.41003.43691.17503.43693.4369
C41.47582.41002.41002.41003.43693.43691.17503.4369
C51.47582.41002.41002.41003.43693.43693.43691.1750
N62.65081.17503.43693.43693.43694.32874.32874.3287
N72.65083.43691.17503.43693.43694.32874.32874.3287
N82.65083.43693.43691.17503.43694.32874.32874.3287
N92.65083.43693.43693.43691.17504.32874.32874.3287

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