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

using model chemistry: CCSD(T)=FULL/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes TD 1A1
Energy calculated at CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-408.691960
Energy at 298.15K-408.690497
HF Energy-407.146150
Nuclear repulsion energy322.234198
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 CCSD(T)=FULL/TZVP
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 2311 2210        
2 A1 585 559        
3 E 549 525        
3 E 549 525        
4 E 106 102        
4 E 106 101        
5 T1 315 301        
5 T1 315 301        
5 T1 315 301        
6 T2 2307 2206        
6 T2 2307 2206        
6 T2 2307 2206        
7 T2 1087 1039        
7 T2 1087 1039        
7 T2 1087 1039        
8 T2 549 524        
8 T2 549 524        
8 T2 549 524        
9 T2 141 135        
9 T2 141 135        
9 T2 141 134        

Unscaled Zero Point Vibrational Energy (zpe) 8699.4 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 8316.6 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 CCSD(T)=FULL/TZVP
ABC
0.05079 0.05079 0.05079

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is Td

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.857 0.857 0.857
C3 -0.857 -0.857 0.857
C4 -0.857 0.857 -0.857
C5 0.857 -0.857 -0.857
N6 1.528 1.528 1.528
N7 -1.528 -1.528 1.528
N8 -1.528 1.528 -1.528
N9 1.528 -1.528 -1.528

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 N6 N7 N8 N9
C11.48451.48451.48451.48452.64582.64582.64582.6458
C21.48452.42412.42412.42411.16133.43833.43833.4383
C31.48452.42412.42412.42413.43831.16133.43833.4383
C41.48452.42412.42412.42413.43833.43831.16133.4383
C51.48452.42412.42412.42413.43833.43833.43831.1613
N62.64581.16133.43833.43833.43834.32054.32054.3205
N72.64583.43831.16133.43833.43834.32054.32054.3205
N82.64583.43833.43831.16133.43834.32054.32054.3205
N92.64583.43833.43833.43831.16134.32054.32054.3205

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