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All results from a given calculation for C2Br4 (tetrabromoethene)

using model chemistry: CCSD=FULL/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 CCSD=FULL/cc-pVTZ
 hartrees
Energy at 0K-10366.988798
Energy at 298.15K 
HF Energy-10365.547363
Nuclear repulsion energy1490.241051
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=FULL/cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at CCSD=FULL/cc-pVTZ
ABC
0.02159 0.01876 0.01004

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

Point Group is D2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.666
C2 0.000 0.000 -0.666
Br3 0.000 1.573 1.677
Br4 0.000 -1.573 1.677
Br5 0.000 -1.573 -1.677
Br6 0.000 1.573 -1.677

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 Br5 Br6
C11.33221.86961.86962.82212.8221
C21.33222.82212.82211.86961.8696
Br31.86962.82213.14524.59833.3544
Br41.86962.82213.14523.35444.5983
Br52.82211.86964.59833.35443.1452
Br62.82211.86963.35444.59833.1452

picture of tetrabromoethene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br5 122.739 C1 C2 Br6 122.739
C2 C1 Br3 122.739 C2 C1 Br4 122.739
Br3 C1 Br4 114.521 Br5 C2 Br6 114.521
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability