return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: wB97X-D/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at wB97X-D/STO-3G
 hartrees
Energy at 0K-5168.597779
Energy at 298.15K-5168.605377
HF Energy-5168.597779
Nuclear repulsion energy 
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 wB97X-D/STO-3G
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 3487 3487 2.98      
2 A1 1809 1809 15.97      
3 A1 1305 1305 0.00      
4 A1 683 683 9.22      
5 A1 108 108 0.11      
6 A2 1015 1015 0.00      
7 A2 407 407 0.00      
8 B1 743 743 20.18      
9 B2 3462 3462 45.52      
10 B2 1453 1453 54.66      
11 B2 878 878 30.14      
12 B2 528 528 3.02      

Unscaled Zero Point Vibrational Energy (zpe) 7938.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7938.2 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 wB97X-D/STO-3G
ABC
0.28874 0.03297 0.02959

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.670 1.242
C2 0.000 -0.670 1.242
Br3 0.000 1.776 -0.276
Br4 0.000 -1.776 -0.276
H5 0.000 1.201 2.204
H6 0.000 -1.201 2.204

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33921.87862.87841.09852.1033
C21.33922.87841.87862.10331.0985
Br31.87862.87843.55142.54543.8744
Br42.87841.87863.55143.87442.5454
H51.09852.10332.54543.87442.4023
H62.10331.09853.87442.54542.4023

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 126.073 C1 C2 H6 118.942
C2 C1 Br3 126.073 C2 C1 H5 118.942
Br3 C1 H5 114.985 Br4 C2 H6 114.985
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.151      
2 C -0.151      
3 Br 0.049      
4 Br 0.049      
5 H 0.102      
6 H 0.102      


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 1.496 1.496
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -44.676 0.000 0.000
y 0.000 -44.884 0.000
z 0.000 0.000 -40.641
Traceless
 xyz
x -1.913 0.000 0.000
y 0.000 -2.226 0.000
z 0.000 0.000 4.139
Polar
3z2-r28.278
x2-y20.208
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.600 0.000 0.000
y 0.000 5.802 0.000
z 0.000 0.000 3.963


<r2> (average value of r2) Å2
<r2> 289.662
(<r2>)1/2 17.019