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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-408.335836
Energy at 298.15K-408.334460
HF Energy-407.012445
Nuclear repulsion energy320.659808
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=FULL/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 2187 2044 0.00      
2 A1 590 551 0.00      
3 E 563 526 0.00      
3 E 563 526 0.00      
4 E 110 103 0.00      
4 E 110 103 0.00      
5 T1 334 312 0.00      
5 T1 334 312 0.00      
5 T1 334 312 0.00      
6 T2 2194 2050 29.56      
6 T2 2194 2050 29.56      
6 T2 2194 2050 29.56      
7 T2 1099 1027 28.25      
7 T2 1099 1027 28.25      
7 T2 1099 1027 28.25      
8 T2 549 513 0.04      
8 T2 549 513 0.04      
8 T2 549 513 0.04      
9 T2 144 134 12.49      
9 T2 144 134 12.49      
9 T2 144 134 12.49      

Unscaled Zero Point Vibrational Energy (zpe) 8540.1 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 7979.8 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=FULL/6-31G**
ABC
0.05042 0.05042 0.05042

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.854 0.854 0.854
C3 -0.854 -0.854 0.854
C4 -0.854 0.854 -0.854
C5 0.854 -0.854 -0.854
N6 1.536 1.536 1.536
N7 -1.536 -1.536 1.536
N8 -1.536 1.536 -1.536
N9 1.536 -1.536 -1.536

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.47911.47911.47911.47912.66062.66062.66062.6606
C21.47912.41532.41532.41531.18153.44813.44813.4481
C31.47912.41532.41532.41533.44811.18153.44813.4481
C41.47912.41532.41532.41533.44813.44811.18153.4481
C51.47912.41532.41532.41533.44813.44813.44811.1815
N62.66061.18153.44813.44813.44814.34474.34474.3447
N72.66063.44811.18153.44813.44814.34474.34474.3447
N82.66063.44813.44811.18153.44814.34474.34474.3447
N92.66063.44813.44813.44811.18154.34474.34474.3447

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