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

using model chemistry: MP2/6-31+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 MP2/6-31+G**
 hartrees
Energy at 0K-408.317257
Energy at 298.15K-408.315720
HF Energy-407.018675
Nuclear repulsion energy320.010598
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 MP2/6-31+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 2167 2038 0.00      
2 A1 587 552 0.00      
3 E 543 511 0.00      
3 E 543 511 0.00      
4 E 105 99 0.00      
4 E 105 99 0.00      
5 T1 312 294 0.00      
5 T1 312 294 0.00      
5 T1 312 294 0.00      
6 T2 2174 2045 29.30      
6 T2 2174 2045 29.30      
6 T2 2174 2045 29.30      
7 T2 1087 1022 33.23      
7 T2 1087 1022 33.23      
7 T2 1087 1022 33.23      
8 T2 540 508 0.32      
8 T2 540 508 0.32      
8 T2 540 508 0.32      
9 T2 138 130 12.17      
9 T2 138 130 12.17      
9 T2 138 130 12.17      

Unscaled Zero Point Vibrational Energy (zpe) 8402.3 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 7903.2 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 MP2/6-31+G**
ABC
0.05022 0.05022 0.05022

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.856 0.856 0.856
C3 -0.856 -0.856 0.856
C4 -0.856 0.856 -0.856
C5 0.856 -0.856 -0.856
N6 1.539 1.539 1.539
N7 -1.539 -1.539 1.539
N8 -1.539 1.539 -1.539
N9 1.539 -1.539 -1.539

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48221.48221.48221.48222.66592.66592.66592.6659
C21.48222.42042.42042.42041.18383.45523.45523.4552
C31.48222.42042.42042.42043.45521.18383.45523.4552
C41.48222.42042.42042.42043.45523.45521.18383.4552
C51.48222.42042.42042.42043.45523.45523.45521.1838
N62.66591.18383.45523.45523.45524.35354.35354.3535
N72.66593.45521.18383.45523.45524.35354.35354.3535
N82.66593.45523.45521.18383.45524.35354.35354.3535
N92.66593.45523.45523.45521.18384.35354.35354.3535

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