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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-5216.001884
Energy at 298.15K 
HF Energy-5216.001884
Nuclear repulsion energy421.707542
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 3052 2995 0.00      
2 Ag 1448 1421 0.00      
3 Ag 1239 1216 0.00      
4 Ag 1100 1080 0.00      
5 Ag 668 655 0.00      
6 Ag 191 188 0.00      
7 Au 3138 3079 0.00      
8 Au 1060 1040 3.98      
9 Au 743 729 6.39      
10 Au 107 105 4.11      
11 Bg 3115 3057 0.00      
12 Bg 1250 1227 0.00      
13 Bg 907 890 0.00      
14 Bu 3061 3004 2.93      
15 Bu 1441 1414 10.69      
16 Bu 1159 1137 39.16      
17 Bu 612 600 69.22      
18 Bu 176 172 8.08      

Unscaled Zero Point Vibrational Energy (zpe) 12232.4 cm-1
Scaled (by 0.9813) Zero Point Vibrational Energy (zpe) 12003.7 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
0.94334 0.02022 0.01995

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 0.493 0.561 0.000
C2 -0.493 -0.561 0.000
Br3 -0.493 2.233 0.000
Br4 0.493 -2.233 0.000
H5 1.126 0.555 0.899
H6 1.126 0.555 -0.899
H7 -1.126 -0.555 0.899
H8 -1.126 -0.555 -0.899

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6 H7 H8
C11.49301.94092.79381.09971.09972.16182.1618
C21.49302.79381.94092.16182.16181.09971.0997
Br31.94092.79384.57342.49892.49892.99702.9970
Br42.79381.94094.57342.99702.99702.49892.4989
H51.09972.16182.49892.99701.79802.51083.0881
H61.09972.16182.49892.99701.79803.08812.5108
H72.16181.09972.99702.49892.51083.08811.7980
H82.16181.09972.99702.49893.08812.51081.7980

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 108.192 C1 C2 H7 112.092
C1 C2 H8 112.092 C2 C1 Br3 108.192
C2 C1 H5 112.092 C2 C1 H6 112.092
Br3 C1 H5 107.280 Br3 C1 H6 107.280
Br4 C2 H7 107.280 Br4 C2 H8 107.280
H5 C1 H6 109.661 H7 C2 H8 109.661
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 -0.363      
2 C -0.363      
3 Br -0.109      
4 Br -0.109      
5 H 0.236      
6 H 0.236      
7 H 0.236      
8 H 0.236      


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 -47.975 1.074 0.000
y 1.074 -54.308 0.000
z 0.000 0.000 -48.744
Traceless
 xyz
x 3.551 1.074 0.000
y 1.074 -5.949 0.000
z 0.000 0.000 2.398
Polar
3z2-r24.795
x2-y26.333
xy1.074
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.841 -1.757 0.000
y -1.757 12.320 0.000
z 0.000 0.000 5.972


<r2> (average value of r2) Å2
<r2> 413.698
(<r2>)1/2 20.340