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

using model chemistry: PBEPBE/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at PBEPBE/6-31G(2df,p)
 hartrees
Energy at 0K-5220.227561
Energy at 298.15K-5220.235147
HF Energy-5220.227561
Nuclear repulsion energy433.284358
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 PBEPBE/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 A1 3159 3126 0.44      
2 A1 1588 1572 28.90      
3 A1 1139 1127 0.86      
4 A1 608 602 7.49      
5 A1 107 106 0.04      
6 A2 845 836 0.00      
7 A2 382 378 0.00      
8 B1 666 659 48.34      
9 B2 3137 3105 12.16      
10 B2 1236 1223 32.39      
11 B2 772 764 55.76      
12 B2 475 470 1.62      

Unscaled Zero Point Vibrational Energy (zpe) 7056.0 cm-1
Scaled (by 0.9897) Zero Point Vibrational Energy (zpe) 6983.3 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 PBEPBE/6-31G(2df,p)
ABC
0.28675 0.03482 0.03105

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.670 1.250
C2 0.000 -0.670 1.250
Br3 0.000 1.726 -0.277
Br4 0.000 -1.726 -0.277
H5 0.000 1.227 2.188
H6 0.000 -1.227 2.188

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33921.85702.84121.09132.1161
C21.33922.84121.85702.11611.0913
Br31.85702.84123.45262.51513.8470
Br42.84121.85703.45263.84702.5151
H51.09132.11612.51513.84702.4542
H62.11611.09133.84702.51512.4542

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 124.684 C1 C2 H6 120.722
C2 C1 Br3 124.684 C2 C1 H5 120.722
Br3 C1 H5 114.595 Br4 C2 H6 114.595
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.238      
2 C -0.238      
3 Br 0.083      
4 Br 0.083      
5 H 0.155      
6 H 0.155      


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 1.564 1.564
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.228 0.000 0.000
y 0.000 -47.758 0.000
z 0.000 0.000 -41.987
Traceless
 xyz
x -4.355 0.000 0.000
y 0.000 -2.151 0.000
z 0.000 0.000 6.506
Polar
3z2-r213.012
x2-y2-1.470
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.765 0.000 0.000
y 0.000 12.354 0.000
z 0.000 0.000 8.924


<r2> (average value of r2) Å2
<r2> 279.633
(<r2>)1/2 16.722