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

using model chemistry: MP2=FULL/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-408.840945
Energy at 298.15K-408.839501
HF Energy-407.154652
Nuclear repulsion energy324.090307
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/aug-cc-pVTZ
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 2198 2091 0.00      
2 A1 596 567 0.00      
3 E 549 523 0.00      
3 E 549 523 0.00      
4 E 109 104 0.00      
4 E 109 104 0.00      
5 T1 321 306 0.00      
5 T1 321 306 0.00      
5 T1 321 306 0.00      
6 T2 2206 2099 24.52      
6 T2 2206 2099 24.52      
6 T2 2206 2099 24.52      
7 T2 1085 1033 23.67      
7 T2 1085 1033 23.67      
7 T2 1085 1033 23.67      
8 T2 537 511 0.00      
8 T2 537 511 0.00      
8 T2 537 511 0.00      
9 T2 139 133 13.92      
9 T2 139 133 13.92      
9 T2 139 133 13.92      

Unscaled Zero Point Vibrational Energy (zpe) 8488.7 cm-1
Scaled (by 0.9514) Zero Point Vibrational Energy (zpe) 8076.1 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/aug-cc-pVTZ
ABC
0.05149 0.05149 0.05149

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/aug-cc-pVTZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.846 0.846 0.846
C3 -0.846 -0.846 0.846
C4 -0.846 0.846 -0.846
C5 0.846 -0.846 -0.846
N6 1.520 1.520 1.520
N7 -1.520 -1.520 1.520
N8 -1.520 1.520 -1.520
N9 1.520 -1.520 -1.520

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.46541.46541.46541.46542.63212.63212.63212.6321
C21.46542.39302.39302.39301.16673.41273.41273.4127
C31.46542.39302.39302.39303.41271.16673.41273.4127
C41.46542.39302.39302.39303.41273.41271.16673.4127
C51.46542.39302.39302.39303.41273.41273.41271.1667
N62.63211.16673.41273.41273.41274.29824.29824.2982
N72.63213.41271.16673.41273.41274.29824.29824.2982
N82.63213.41273.41271.16673.41274.29824.29824.2982
N92.63213.41273.41273.41271.16674.29824.29824.2982

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