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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1AG
Energy calculated at CBS-Q
 hartrees
Energy at 0K-5222.982020
Energy at 298.15K-5222.976203
HF Energy-5216.816468
Nuclear repulsion energy389.822672
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Ag 3429 3429 0.00      
2 Ag 1810 1810 0.00      
3 Ag 1411 1411 0.00      
4 Ag 831 831 0.00      
5 Ag 239 239 0.00      
6 Au 1063 1063 63.09      
7 Au 193 193 0.29      
8 Bg 886 886 0.00      
9 Bu 3422 3422 15.09      
10 Bu 1309 1309 53.22      
11 Bu 752 752 82.02      
12 Bu 218 218 2.48      

Unscaled Zero Point Vibrational Energy (zpe) 7780.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7780.8 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 CBS-Q
ABC
1.68752 0.02019 0.01995

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.376 0.538 0.000
C2 0.376 -0.538 0.000
Br3 0.376 2.261 0.000
Br4 -0.376 -2.261 0.000
H5 -1.449 0.521 0.000
H6 1.449 -0.521 0.000

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.31241.87962.79871.07322.1096
C21.31242.79871.87962.10961.0732
Br31.87962.79874.58352.52112.9815
Br42.79871.87964.58352.98152.5211
H51.07322.10962.52112.98153.0792
H62.10961.07322.98152.52113.0792

picture of Ethene, 1,2-dibromo-, (E)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br4 121.497 C1 C2 H6 124.026
C2 C1 Br3 121.497 C2 C1 H5 124.026
Br3 C1 H5 114.477 Br4 C2 H6 114.477
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability