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: HSEh1PBE/Def2TZVPP

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/Def2TZVPP
 hartrees
Energy at 0K-5225.003827
Energy at 298.15K-5225.011475
HF Energy-5225.003827
Nuclear repulsion energy430.144155
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/Def2TZVPP
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 3237 3237 0.01      
2 A1 1653 1653 33.45      
3 A1 1177 1177 1.34      
4 A1 605 605 7.64      
5 A1 107 107 0.04      
6 A2 916 916 0.00      
7 A2 391 391 0.00      
8 B1 694 694 61.05      
9 B2 3215 3215 16.95      
10 B2 1285 1285 41.62      
11 B2 776 776 62.81      
12 B2 485 485 2.18      

Unscaled Zero Point Vibrational Energy (zpe) 7271.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7271.3 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 HSEh1PBE/Def2TZVPP
ABC
0.29100 0.03390 0.03036

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/Def2TZVPP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.661 1.241
C2 0.000 -0.661 1.241
Br3 0.000 1.751 -0.275
Br4 0.000 -1.751 -0.275
H5 0.000 1.209 2.173
H6 0.000 -1.209 2.173

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32181.86702.84861.08122.0893
C21.32182.84861.86702.08931.0812
Br31.86702.84863.50192.50693.8409
Br42.84861.86703.50193.84092.5069
H51.08122.08932.50693.84092.4180
H62.08931.08123.84092.50692.4180

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 125.723 C1 C2 H6 120.460
C2 C1 Br3 125.723 C2 C1 H5 120.460
Br3 C1 H5 113.817 Br4 C2 H6 113.817
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.110      
2 C -0.110      
3 Br -0.015      
4 Br -0.015      
5 H 0.125      
6 H 0.125      


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 1.663 1.663
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -50.240 0.000 0.000
y 0.000 -48.554 0.000
z 0.000 0.000 -42.576
Traceless
 xyz
x -4.675 0.000 0.000
y 0.000 -2.145 0.000
z 0.000 0.000 6.820
Polar
3z2-r213.640
x2-y2-1.686
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.041 0.000 0.000
y 0.000 12.530 0.000
z 0.000 0.000 9.062


<r2> (average value of r2) Å2
<r2> 285.412
(<r2>)1/2 16.894