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

using model chemistry: CISD/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at CISD/cc-pVTZ
 hartrees
Energy at 0K-5222.484634
Energy at 298.15K-5222.492408
HF Energy-5221.818025
Nuclear repulsion energy430.904200
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 CISD/cc-pVTZ
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 3347 3112 0.27      
2 A1 1739 1617 27.17      
3 A1 1246 1159 2.56      
4 A1 626 582 7.26      
5 A1 114 106 0.06      
6 A2 1000 930 0.00      
7 A2 408 379 0.00      
8 B1 746 694 59.72      
9 B2 3323 3089 18.33      
10 B2 1363 1267 48.58      
11 B2 811 754 54.06      
12 B2 501 466 1.80      

Unscaled Zero Point Vibrational Energy (zpe) 7611.6 cm-1
Scaled (by 0.9298) Zero Point Vibrational Energy (zpe) 7077.2 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 CISD/cc-pVTZ
ABC
0.29512 0.03386 0.03038

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.657 1.232
C2 0.000 -0.657 1.232
Br3 0.000 1.752 -0.273
Br4 0.000 -1.752 -0.273
H5 0.000 1.192 2.160
H6 0.000 -1.192 2.160

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.31461.86092.84071.07122.0692
C21.31462.84071.86092.06921.0712
Br31.86092.84073.50432.49673.8193
Br42.84071.86093.50433.81932.4967
H51.07122.06922.49673.81932.3838
H62.06921.07123.81932.49672.3838

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 126.040 C1 C2 H6 119.937
C2 C1 Br3 126.040 C2 C1 H5 119.937
Br3 C1 H5 114.023 Br4 C2 H6 114.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability