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

using model chemistry: BLYP/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at BLYP/3-21G*
 hartrees
Energy at 0K-5201.003462
Energy at 298.15K-5201.011027
HF Energy-5201.003462
Nuclear repulsion energy426.687293
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 BLYP/3-21G*
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 3153 3133 2.26      
2 A1 1567 1556 35.94      
3 A1 1175 1167 1.56      
4 A1 578 574 8.84      
5 A1 106 105 0.01      
6 A2 882 876 0.00      
7 A2 382 379 0.00      
8 B1 679 674 72.50      
9 B2 3129 3108 8.73      
10 B2 1290 1282 34.52      
11 B2 746 741 59.82      
12 B2 465 462 2.64      

Unscaled Zero Point Vibrational Energy (zpe) 7075.1 cm-1
Scaled (by 0.9935) Zero Point Vibrational Energy (zpe) 7029.1 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 BLYP/3-21G*
ABC
0.27130 0.03409 0.03029

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.669 1.290
C2 0.000 -0.669 1.290
Br3 0.000 1.745 -0.284
Br4 0.000 -1.745 -0.284
H5 0.000 1.244 2.216
H6 0.000 -1.244 2.216

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33871.90702.88251.08972.1257
C21.33872.88251.90702.12571.0897
Br31.90702.88253.48992.55013.8971
Br42.88251.90703.48993.89712.5501
H51.08972.12572.55013.89712.4883
H62.12571.08973.89712.55012.4883

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 124.335 C1 C2 H6 121.836
C2 C1 Br3 124.335 C2 C1 H5 121.836
Br3 C1 H5 113.829 Br4 C2 H6 113.829
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.227      
2 C -0.227      
3 Br 0.005      
4 Br 0.005      
5 H 0.222      
6 H 0.222      


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 1.373 1.373
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.593 0.000 0.000
y 0.000 -46.791 0.000
z 0.000 0.000 -41.569
Traceless
 xyz
x -5.413 0.000 0.000
y 0.000 -1.209 0.000
z 0.000 0.000 6.623
Polar
3z2-r213.245
x2-y2-2.803
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.543 0.000 0.000
y 0.000 10.582 0.000
z 0.000 0.000 7.613


<r2> (average value of r2) Å2
<r2> 285.799
(<r2>)1/2 16.906