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

using model chemistry: CISD/6-31G*

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/6-31G*
 hartrees
Energy at 0K-5217.081424
Energy at 298.15K-5217.089129
HF Energy-5216.642915
Nuclear repulsion energy430.180738
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/6-31G*
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 3348 3100 0.84      
2 A1 1739 1610 24.51      
3 A1 1245 1152 2.46      
4 A1 606 561 9.73      
5 A1 121 112 0.06      
6 A2 965 893 0.00      
7 A2 392 363 0.00      
8 B1 744 689 61.71      
9 B2 3325 3078 13.94      
10 B2 1356 1255 43.55      
11 B2 793 734 52.26      
12 B2 487 451 3.28      

Unscaled Zero Point Vibrational Energy (zpe) 7559.7 cm-1
Scaled (by 0.9258) Zero Point Vibrational Energy (zpe) 6998.8 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/6-31G*
ABC
0.28247 0.03431 0.03059

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.661 1.262
C2 0.000 -0.661 1.262
Br3 0.000 1.740 -0.279
Br4 0.000 -1.740 -0.279
H5 0.000 1.216 2.187
H6 0.000 -1.216 2.187

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32261.88102.85331.07882.0930
C21.32262.85331.88102.09301.0788
Br31.88102.85333.48002.52133.8498
Br42.85331.88103.48003.84982.5213
H51.07882.09302.52133.84982.4321
H62.09301.07883.84982.52132.4321

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 124.992 C1 C2 H6 120.946
C2 C1 Br3 124.992 C2 C1 H5 120.946
Br3 C1 H5 114.062 Br4 C2 H6 114.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability