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All results from a given calculation for CH2BrCH2Br (Ethane, 1,2-dibromo-)

using model chemistry: LSDA/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at LSDA/6-31G**
 hartrees
Energy at 0K-5216.007055
Energy at 298.15K 
HF Energy-5216.007055
Nuclear repulsion energy421.980301
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 LSDA/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 Ag 3046 2989 0.00      
2 Ag 1432 1405 0.00      
3 Ag 1226 1203 0.00      
4 Ag 1097 1076 0.00      
5 Ag 668 655 0.00      
6 Ag 191 187 0.00      
7 Au 3135 3076 0.05      
8 Au 1050 1030 3.80      
9 Au 738 724 6.19      
10 Au 105 103 4.07      
11 Bg 3113 3055 0.00      
12 Bg 1237 1214 0.00      
13 Bg 899 882 0.00      
14 Bu 3055 2998 2.66      
15 Bu 1423 1396 10.23      
16 Bu 1145 1124 37.68      
17 Bu 613 601 67.96      
18 Bu 173 169 8.07      

Unscaled Zero Point Vibrational Energy (zpe) 12172.0 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 11944.4 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 LSDA/6-31G**
ABC
0.94434 0.02025 0.01997

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.492 0.561 0.000
C2 -0.492 -0.561 0.000
Br3 -0.492 2.232 0.000
Br4 0.492 -2.232 0.000
H5 1.125 0.555 0.899
H6 1.125 0.555 -0.899
H7 -1.125 -0.555 0.899
H8 -1.125 -0.555 -0.899

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6 H7 H8
C11.49221.93952.79221.09931.09932.16072.1607
C21.49222.79221.93952.16072.16071.09931.0993
Br31.93952.79224.57042.49732.49732.99532.9953
Br42.79221.93954.57042.99532.99532.49732.4973
H51.09932.16072.49732.99531.79762.50933.0867
H61.09932.16072.49732.99531.79763.08672.5093
H72.16071.09932.99532.49732.50933.08671.7976
H82.16071.09932.99532.49733.08672.50931.7976

picture of Ethane, 1,2-dibromo- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Br4 108.199 C1 C2 H7 112.082
C1 C2 H8 112.082 C2 C1 Br3 108.199
C2 C1 H5 112.082 C2 C1 H6 112.082
Br3 C1 H5 107.274 Br3 C1 H6 107.274
Br4 C2 H7 107.274 Br4 C2 H8 107.274
H5 C1 H6 109.687 H7 C2 H8 109.687
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.288      
2 C -0.288      
3 Br -0.116      
4 Br -0.116      
5 H 0.202      
6 H 0.202      
7 H 0.202      
8 H 0.202      


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 0.000 0.000
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -47.966 1.068 0.000
y 1.068 -54.268 0.000
z 0.000 0.000 -48.764
Traceless
 xyz
x 3.550 1.068 0.000
y 1.068 -5.903 0.000
z 0.000 0.000 2.353
Polar
3z2-r24.706
x2-y26.302
xy1.068
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.877 -1.755 0.000
y -1.755 12.354 0.000
z 0.000 0.000 6.005


<r2> (average value of r2) Å2
<r2> 413.194
(<r2>)1/2 20.327