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

using model chemistry: G2

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at G2
 hartrees
Energy at 0K-5222.387461
Energy at 298.15K-5222.381565
HF Energy-5216.643926
Nuclear repulsion energy388.694356
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 HF/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 Ag 3449 3249 0.00      
2 Ag 1809 1705 0.00      
3 Ag 1412 1330 0.00      
4 Ag 816 769 0.00      
5 Ag 236 222 0.00      
6 Au 1066 1005 62.64      
7 Au 191 180 0.31      
8 Bg 891 839 0.00      
9 Bu 3443 3244 15.26      
10 Bu 1307 1231 56.97      
11 Bu 728 686 84.52      
12 Bu 217 205 2.60      

Unscaled Zero Point Vibrational Energy (zpe) 7781.5 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 7331.7 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 MP2=FULL/6-31G*
ABC
1.68193 0.02003 0.01979

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.385 0.543 0.000
C2 0.385 -0.543 0.000
Br3 0.385 2.269 0.000
Br4 -0.385 -2.269 0.000
H5 -1.468 0.524 0.000
H6 1.468 -0.524 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33211.89032.81271.08302.1385
C21.33212.81271.89032.13851.0830
Br31.89032.81274.60372.54612.9955
Br42.81271.89034.60372.99552.5461
H51.08302.13852.54612.99553.1173
H62.13851.08302.99552.54613.1173

picture of Ethene, 1,2-dibromo-, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br4 121.303 C1 C2 H6 124.366
C2 C1 Br3 121.303 C2 C1 H5 124.366
Br3 C1 H5 114.332 Br4 C2 H6 114.332
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability