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

using model chemistry: HSEh1PBE/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 HSEh1PBE/3-21G
 hartrees
Energy at 0K-5199.804467
Energy at 298.15K-5199.812195
HF Energy-5199.804467
Nuclear repulsion energy425.307886
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 HSEh1PBE/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 3280 3160 0.10      
2 A1 1703 1640 33.61      
3 A1 1217 1172 1.20      
4 A1 591 570 9.22      
5 A1 113 109 0.01      
6 A2 1009 972 0.00      
7 A2 415 400 0.00      
8 B1 754 726 104.40      
9 B2 3254 3135 14.19      
10 B2 1330 1282 44.69      
11 B2 772 744 65.11      
12 B2 492 474 2.32      

Unscaled Zero Point Vibrational Energy (zpe) 7465.5 cm-1
Scaled (by 0.9633) Zero Point Vibrational Energy (zpe) 7191.5 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 HSEh1PBE/3-21G
ABC
0.27868 0.03340 0.02982

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.659 1.271
C2 0.000 -0.659 1.271
Br3 0.000 1.764 -0.281
Br4 0.000 -1.764 -0.281
H5 0.000 1.216 2.199
H6 0.000 -1.216 2.199

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.31801.90542.87771.08162.0916
C21.31802.87771.90542.09161.0816
Br31.90542.87773.52872.53933.8766
Br42.87771.90543.52873.87662.5393
H51.08162.09162.53933.87662.4315
H62.09161.08163.87662.53932.4315

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 125.458 C1 C2 H6 120.979
C2 C1 Br3 125.458 C2 C1 H5 120.979
Br3 C1 H5 113.562 Br4 C2 H6 113.562
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.486      
2 C -0.486      
3 Br 0.199      
4 Br 0.199      
5 H 0.287      
6 H 0.287      


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 1.623 1.623
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.222 0.000 0.000
y 0.000 -47.327 0.000
z 0.000 0.000 -42.200
Traceless
 xyz
x -5.459 0.000 0.000
y 0.000 -1.116 0.000
z 0.000 0.000 6.575
Polar
3z2-r213.150
x2-y2-2.896
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.868 0.000 0.000
y 0.000 9.178 0.000
z 0.000 0.000 6.730


<r2> (average value of r2) Å2
<r2> 289.742
(<r2>)1/2 17.022