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All results from a given calculation for C6N4 (Tetracyanoethylene)

using model chemistry: QCISD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D2H 1AG
Energy calculated at QCISD/cc-pVTZ
 hartrees
Energy at 0K-446.684067
Energy at 298.15K 
HF Energy-445.051979
Nuclear repulsion energy375.492292
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 QCISD/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD/cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.675
C2 0.000 0.000 -0.675
C3 0.000 1.225 1.429
C4 0.000 -1.225 1.429
C5 0.000 1.225 -1.429
C6 0.000 -1.225 -1.429
N7 0.000 2.200 2.048
N8 0.000 -2.200 2.048
N9 0.000 2.200 -2.048
N10 0.000 -2.200 -2.048

Atom - Atom Distances (Å)
  C1 C2 C3 C4 C5 C6 N7 N8 N9 N10
C11.34941.43891.43892.43462.43462.59292.59293.49993.4999
C21.34942.43462.43461.43891.43893.49993.49992.59292.5929
C31.43892.43462.45072.85813.76491.15413.48043.61064.8803
C41.43892.43462.45073.76492.85813.48041.15414.88033.6106
C52.43461.43892.85813.76492.45073.61064.88031.15413.4804
C62.43461.43893.76492.85812.45074.88033.61063.48041.1541
N72.59293.49991.15413.48043.61064.88034.39934.09536.0104
N82.59293.49993.48041.15414.88033.61064.39936.01044.0953
N93.49992.59293.61064.88031.15413.48044.09536.01044.3993
N103.49992.59294.88033.61063.48041.15416.01044.09534.3993

picture of Tetracyanoethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C5 121.616 C1 C2 C6 121.616
C1 C3 N7 179.203 C1 C4 N8 179.203
C2 C1 C3 121.616 C2 C1 C4 121.616
C2 C5 N9 179.203 C2 C6 N10 179.203
C3 C1 C4 116.768 C5 C2 C6 116.768
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability