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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-5220.734144
Energy at 298.15K-5220.741766
HF Energy-5220.734144
Nuclear repulsion energy431.092391
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 B3PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3256 3115 0.78      
2 A1 1660 1588 33.12      
3 A1 1184 1133 1.41      
4 A1 598 572 9.87      
5 A1 114 109 0.03      
6 A2 902 863 0.00      
7 A2 385 368 0.00      
8 B1 699 669 64.95      
9 B2 3235 3095 12.68      
10 B2 1291 1235 38.81      
11 B2 770 737 63.63      
12 B2 479 458 3.28      

Unscaled Zero Point Vibrational Energy (zpe) 7286.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 6970.6 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 B3PW91/6-31G*
ABC
0.28265 0.03451 0.03076

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.665 1.261
C2 0.000 -0.665 1.261
Br3 0.000 1.734 -0.279
Br4 0.000 -1.734 -0.279
H5 0.000 1.225 2.190
H6 0.000 -1.225 2.190

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.32951.87512.85091.08432.1053
C21.32952.85091.87512.10531.0843
Br31.87512.85093.46882.52073.8536
Br42.85091.87513.46883.85362.5207
H51.08432.10532.52073.85362.4494
H62.10531.08433.85362.52072.4494

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 124.782 C1 C2 H6 121.092
C2 C1 Br3 124.782 C2 C1 H5 121.092
Br3 C1 H5 114.126 Br4 C2 H6 114.126
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.174      
2 C -0.174      
3 Br -0.050      
4 Br -0.050      
5 H 0.224      
6 H 0.224      


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 1.717 1.717
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.609 0.000 0.000
y 0.000 -47.592 0.000
z 0.000 0.000 -41.399
Traceless
 xyz
x -5.113 0.000 0.000
y 0.000 -2.088 0.000
z 0.000 0.000 7.201
Polar
3z2-r214.402
x2-y2-2.017
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.337 0.000 0.000
y 0.000 10.991 0.000
z 0.000 0.000 7.886


<r2> (average value of r2) Å2
<r2> 281.850
(<r2>)1/2 16.788