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

using model chemistry: PBE1PBE/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 PBE1PBE/3-21G
 hartrees
Energy at 0K-5200.302395
Energy at 298.15K-5200.310121
HF Energy-5200.302395
Nuclear repulsion energy434.918530
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 PBE1PBE/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 3261 3132 0.26      
2 A1 1658 1593 30.69      
3 A1 1214 1166 0.81      
4 A1 633 608 8.35      
5 A1 113 109 0.01      
6 A2 958 920 0.00      
7 A2 401 385 0.00      
8 B1 722 693 86.46      
9 B2 3236 3108 14.06      
10 B2 1336 1283 27.68      
11 B2 798 766 57.12      
12 B2 494 474 1.28      

Unscaled Zero Point Vibrational Energy (zpe) 7412.6 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 7119.1 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 PBE1PBE/3-21G
ABC
0.27702 0.03569 0.03162

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.664 1.276
C2 0.000 -0.664 1.276
Br3 0.000 1.705 -0.282
Br4 0.000 -1.705 -0.282
H5 0.000 1.234 2.197
H6 0.000 -1.234 2.197

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32791.87342.83491.08312.1094
C21.32792.83491.87342.10941.0831
Br31.87342.83493.40942.52323.8444
Br42.83491.87343.40943.84442.5232
H51.08312.10942.52323.84442.4675
H62.10941.08313.84442.52322.4675

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 123.748 C1 C2 H6 121.742
C2 C1 Br3 123.748 C2 C1 H5 121.742
Br3 C1 H5 114.510 Br4 C2 H6 114.510
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.284      
2 C -0.284      
3 Br 0.011      
4 Br 0.011      
5 H 0.273      
6 H 0.273      


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 1.505 1.505
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.842 0.000 0.000
y 0.000 -46.917 0.000
z 0.000 0.000 -41.242
Traceless
 xyz
x -5.762 0.000 0.000
y 0.000 -1.375 0.000
z 0.000 0.000 7.137
Polar
3z2-r214.274
x2-y2-2.925
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.537 0.000 0.000
y 0.000 10.160 0.000
z 0.000 0.000 7.361


<r2> (average value of r2) Å2
<r2> 275.232
(<r2>)1/2 16.590