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

using model chemistry: PBEPBE/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 PBEPBE/6-31G**
 hartrees
Energy at 0K-5219.886803
Energy at 298.15K-5219.894348
HF Energy-5219.886803
Nuclear repulsion energy429.167883
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 PBEPBE/6-31G**
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 3175 3131 0.44      
2 A1 1599 1577 35.82      
3 A1 1136 1120 1.21      
4 A1 584 576 9.52      
5 A1 111 109 0.02      
6 A2 842 830 0.00      
7 A2 373 368 0.00      
8 B1 665 656 60.61      
9 B2 3154 3110 13.38      
10 B2 1237 1220 35.89      
11 B2 747 737 64.74      
12 B2 467 460 3.16      

Unscaled Zero Point Vibrational Energy (zpe) 7043.6 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 6947.1 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 PBEPBE/6-31G**
ABC
0.27902 0.03427 0.03052

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.670 1.270
C2 0.000 -0.670 1.270
Br3 0.000 1.740 -0.281
Br4 0.000 -1.740 -0.281
H5 0.000 1.236 2.203
H6 0.000 -1.236 2.203

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6
C11.33951.88412.86571.09152.1221
C21.33952.86571.88412.12211.0915
Br31.88412.86573.48092.53393.8765
Br42.86571.88413.48093.87652.5339
H51.09152.12212.53393.87652.4726
H62.12211.09153.87652.53392.4726

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 124.632 C1 C2 H6 121.268
C2 C1 Br3 124.632 C2 C1 H5 121.268
Br3 C1 H5 114.100 Br4 C2 H6 114.100
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.116      
2 C -0.116      
3 Br -0.048      
4 Br -0.048      
5 H 0.164      
6 H 0.164      


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 1.582 1.582
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -49.591 0.000 0.000
y 0.000 -47.489 0.000
z 0.000 0.000 -41.644
Traceless
 xyz
x -5.024 0.000 0.000
y 0.000 -1.872 0.000
z 0.000 0.000 6.896
Polar
3z2-r213.792
x2-y2-2.102
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.390 0.000 0.000
y 0.000 11.305 0.000
z 0.000 0.000 8.134


<r2> (average value of r2) Å2
<r2> 283.926
(<r2>)1/2 16.850