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

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

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-pVDZ
 hartrees
Energy at 0K-408.398108
Energy at 298.15K-408.396655
HF Energy-407.055647
Nuclear repulsion energy319.024179
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-pVDZ
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 2137 2071 0.00      
2 A1 584 566 0.00      
3 E 553 536 0.00      
3 E 553 536 0.00      
4 E 107 104 0.00      
4 E 107 104 0.00      
5 T1 321 311 0.00      
5 T1 321 311 0.00      
5 T1 321 311 0.00      
6 T2 2145 2079 31.23      
6 T2 2145 2079 31.23      
6 T2 2145 2079 31.23      
7 T2 1078 1045 26.78      
7 T2 1078 1045 26.78      
7 T2 1078 1045 26.78      
8 T2 541 524 0.05      
8 T2 541 524 0.05      
8 T2 541 524 0.05      
9 T2 139 135 12.87      
9 T2 139 135 12.87      
9 T2 139 135 12.87      

Unscaled Zero Point Vibrational Energy (zpe) 8355.3 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 8098.0 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=FULL/aug-cc-pVDZ
ABC
0.04991 0.04991 0.04991

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

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.858 0.858 0.858
C3 -0.858 -0.858 0.858
C4 -0.858 0.858 -0.858
C5 0.858 -0.858 -0.858
N6 1.544 1.544 1.544
N7 -1.544 -1.544 1.544
N8 -1.544 1.544 -1.544
N9 1.544 -1.544 -1.544

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48681.48681.48681.48682.67422.67422.67422.6742
C21.48682.42792.42792.42791.18743.46593.46593.4659
C31.48682.42792.42792.42793.46591.18743.46593.4659
C41.48682.42792.42792.42793.46593.46591.18743.4659
C51.48682.42792.42792.42793.46593.46593.46591.1874
N62.67421.18743.46593.46593.46594.36694.36694.3669
N72.67423.46591.18743.46593.46594.36694.36694.3669
N82.67423.46593.46591.18743.46594.36694.36694.3669
N92.67423.46593.46593.46591.18744.36694.36694.3669

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