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

using model chemistry: MP3/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at MP3/6-31+G**
 hartrees
Energy at 0K-5217.202543
Energy at 298.15K-5217.210185
HF Energy-5216.679632
Nuclear repulsion energy426.836454
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 MP3/6-31+G**
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 3333 3101 0.53      
2 A1 1693 1576 26.77      
3 A1 1231 1146 2.18      
4 A1 587 547 7.79      
5 A1 107 100 0.06      
6 A2 914 850 0.00      
7 A2 392 364 0.00      
8 B1 712 662 66.19      
9 B2 3311 3081 15.75      
10 B2 1341 1247 48.93      
11 B2 764 711 57.36      
12 B2 480 447 2.11      

Unscaled Zero Point Vibrational Energy (zpe) 7431.7 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 6915.2 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 MP3/6-31+G**
ABC
0.28694 0.03335 0.02987

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.665 1.251
C2 0.000 -0.665 1.251
Br3 0.000 1.765 -0.277
Br4 0.000 -1.765 -0.277
H5 0.000 1.211 2.180
H6 0.000 -1.211 2.180

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33011.88262.87071.07792.0938
C21.33012.87071.88262.09381.0779
Br31.88262.87073.53092.51853.8596
Br42.87071.88263.53093.85962.5185
H51.07792.09382.51853.85962.4225
H62.09381.07793.85962.51852.4225

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 125.768 C1 C2 H6 120.446
C2 C1 Br3 125.768 C2 C1 H5 120.446
Br3 C1 H5 113.785 Br4 C2 H6 113.785
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability