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

using model chemistry: QCISD/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 QCISD/6-31G**
 hartrees
Energy at 0K-5217.173036
Energy at 298.15K-5217.180656
HF Energy-5216.646218
Nuclear repulsion energy428.495925
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/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 3306 3113 1.84      
2 A1 1672 1574 23.39      
3 A1 1210 1139 3.22      
4 A1 586 551 8.83      
5 A1 118 111 0.05      
6 A2 906 853 0.00      
7 A2 370 348 0.00      
8 B1 709 668 53.33      
9 B2 3284 3092 11.13      
10 B2 1324 1246 43.39      
11 B2 769 724 45.77      
12 B2 470 442 2.85      

Unscaled Zero Point Vibrational Energy (zpe) 7362.5 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 6931.0 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 QCISD/6-31G**
ABC
0.27794 0.03415 0.03042

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.667 1.273
C2 0.000 -0.667 1.273
Br3 0.000 1.744 -0.281
Br4 0.000 -1.744 -0.281
H5 0.000 1.224 2.198
H6 0.000 -1.224 2.198

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33351.89112.86831.07962.1049
C21.33352.86831.89112.10491.0796
Br31.89112.86833.48742.53293.8671
Br42.86831.89113.48743.86712.5329
H51.07962.10492.53293.86712.4484
H62.10491.07963.86712.53292.4484

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 124.713 C1 C2 H6 121.088
C2 C1 Br3 124.713 C2 C1 H5 121.088
Br3 C1 H5 114.199 Br4 C2 H6 114.199
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability