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

using model chemistry: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at G4
 hartrees
Energy at 0K-5224.592280
Energy at 298.15K-5224.586390
HF Energy-5225.135633
Nuclear repulsion energy386.729762
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 B3LYP/6-31G(2df,p)
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 3236 3123 0.00      
2 Ag 1640 1582 0.00      
3 Ag 1297 1252 0.00      
4 Ag 775 748 0.00      
5 Ag 225 217 0.00      
6 Au 949 916 40.49      
7 Au 175 169 0.10      
8 Bg 785 758 0.00      
9 Bu 3233 3120 12.71      
10 Bu 1200 1158 33.33      
11 Bu 715 690 72.62      
12 Bu 198 191 1.81      

Unscaled Zero Point Vibrational Energy (zpe) 7214.2 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 6961.7 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 B3LYP/6-31G(2df,p)
ABC
1.72957 0.02027 0.02004

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.377 0.545 0.000
C2 0.377 -0.545 0.000
Br3 0.377 2.256 0.000
Br4 -0.377 -2.256 0.000
H5 -1.458 0.530 0.000
H6 1.458 -0.530 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32511.86952.80131.08142.1264
C21.32512.80131.86952.12641.0814
Br31.86952.80134.57492.51862.9890
Br42.80131.86954.57492.98902.5186
H51.08142.12642.51862.98903.1025
H62.12641.08142.98902.51863.1025

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 121.350 C1 C2 H6 124.905
C2 C1 Br3 121.350 C2 C1 H5 124.905
Br3 C1 H5 113.745 Br4 C2 H6 113.745
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.195      
2 C -0.195      
3 Br 0.038      
4 Br 0.038      
5 H 0.157      
6 H 0.157      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 406.308
(<r2>)1/2 20.157