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

using model chemistry: MP4=FULL/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 MP4=FULL/cc-pVDZ
 hartrees
Energy at 0K-408.418009
Energy at 298.15K-408.416543
HF Energy-407.040976
Nuclear repulsion energy318.126686
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 MP4=FULL/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 2116 2043        
2 A1 578 558        
3 E 548 529        
3 E 548 529        
4 E 107 103        
4 E 107 103        
5 T1 327 316        
5 T1 327 316        
5 T1 327 316        
6 T2 2141 2066        
6 T2 2141 2066        
6 T2 2141 2066        
7 T2 1065 1027        
7 T2 1065 1027        
7 T2 1065 1027        
8 T2 537 518        
8 T2 537 518        
8 T2 537 518        
9 T2 140 135        
9 T2 140 135        
9 T2 140 135        

Unscaled Zero Point Vibrational Energy (zpe) 8315.7 cm-1
Scaled (by 0.9651) Zero Point Vibrational Energy (zpe) 8025.4 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 MP4=FULL/cc-pVDZ
ABC
0.04960 0.04960 0.04960

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/cc-pVDZ

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.862 0.862 0.862
C3 -0.862 -0.862 0.862
C4 -0.862 0.862 -0.862
C5 0.862 -0.862 -0.862
N6 1.548 1.548 1.548
N7 -1.548 -1.548 1.548
N8 -1.548 1.548 -1.548
N9 1.548 -1.548 -1.548

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.49351.49351.49351.49352.68152.68152.68152.6815
C21.49352.43882.43882.43881.18803.47723.47723.4772
C31.49352.43882.43882.43883.47721.18803.47723.4772
C41.49352.43882.43882.43883.47723.47721.18803.4772
C51.49352.43882.43882.43883.47723.47723.47721.1880
N62.68151.18803.47723.47723.47724.37894.37894.3789
N72.68153.47721.18803.47723.47724.37894.37894.3789
N82.68153.47723.47721.18803.47724.37894.37894.3789
N92.68153.47723.47723.47721.18804.37894.37894.3789

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