return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CHBrCHBr (Ethene, 1,2-dibromo-, (Z)-)

using model chemistry: CCSD=FULL/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at CCSD=FULL/6-311+G(3df,2p)
 hartrees
Energy at 0K-5223.178974
Energy at 298.15K-5223.186653
HF Energy-5221.640746
Nuclear repulsion energy429.413268
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/6-311+G(3df,2p)
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 3257 3257 0.16      
2 A1 1664 1664 25.03      
3 A1 1205 1205 2.17      
4 A1 610 610 6.01      
5 A1 112 112 0.05      
6 A2 935 935 0.00      
7 A2 388 388 0.00      
8 B1 704 704 53.12      
9 B2 3234 3234 15.30      
10 B2 1315 1315 44.66      
11 B2 787 787 48.79      
12 B2 485 485 1.35      

Unscaled Zero Point Vibrational Energy (zpe) 7347.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7347.4 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 CCSD=FULL/6-311+G(3df,2p)
ABC
0.29134 0.03371 0.03022

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD=FULL/6-311+G(3df,2p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.663 1.240
C2 0.000 -0.663 1.240
Br3 0.000 1.756 -0.275
Br4 0.000 -1.756 -0.275
H5 0.000 1.203 2.173
H6 0.000 -1.203 2.173

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32521.86792.85351.07862.0860
C21.32522.85351.86792.08601.0786
Br31.86792.85353.51162.50983.8402
Br42.85351.86793.51163.84022.5098
H51.07862.08602.50983.84022.4058
H62.08601.07863.84022.50982.4058

picture of Ethene, 1,2-dibromo-, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br4 125.822 C1 C2 H6 120.060
C2 C1 Br3 125.822 C2 C1 H5 120.060
Br3 C1 H5 114.118 Br4 C2 H6 114.118
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability