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

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

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/6-31+G**
 hartrees
Energy at 0K-5216.042446
Energy at 298.15K 
HF Energy-5216.042446
Nuclear repulsion energy422.005316
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/6-31+G**
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 3039 2994 0.00      
2 Ag 1426 1405 0.00      
3 Ag 1243 1225 0.00      
4 Ag 1097 1081 0.00      
5 Ag 674 664 0.00      
6 Ag 193 190 0.00      
7 Au 3126 3079 0.70      
8 Au 1070 1053 5.08      
9 Au 749 738 5.58      
10 Au 133 131 4.13      
11 Bg 3103 3056 0.00      
12 Bg 1240 1221 0.00      
13 Bg 923 909 0.00      
14 Bu 3049 3003 2.47      
15 Bu 1419 1398 11.77      
16 Bu 1163 1146 42.46      
17 Bu 616 607 68.28      
18 Bu 168 166 7.82      

Unscaled Zero Point Vibrational Energy (zpe) 12215.7 cm-1
Scaled (by 0.985) Zero Point Vibrational Energy (zpe) 12032.4 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/6-31+G**
ABC
0.95121 0.02022 0.01995

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

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.488 0.564 0.000
C2 -0.488 -0.564 0.000
Br3 -0.488 2.234 0.000
Br4 0.488 -2.234 0.000
H5 1.124 0.561 0.898
H6 1.124 0.561 -0.898
H7 -1.124 -0.561 0.898
H8 -1.124 -0.561 -0.898

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6 H7 H8
C11.49211.93482.79781.10001.10002.16112.1611
C21.49212.79781.93482.16112.16111.10001.1000
Br31.93482.79784.57342.49092.49093.00343.0034
Br42.79781.93484.57343.00343.00342.49092.4909
H51.10002.16112.49093.00341.79642.51143.0877
H61.10002.16112.49093.00341.79643.08772.5114
H72.16111.10003.00342.49092.51143.08771.7964
H82.16111.10003.00342.49093.08772.51141.7964

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 108.774 C1 C2 H7 112.075
C1 C2 H8 112.075 C2 C1 Br3 108.774
C2 C1 H5 112.075 C2 C1 H6 112.075
Br3 C1 H5 107.096 Br3 C1 H6 107.096
Br4 C2 H7 107.096 Br4 C2 H8 107.096
H5 C1 H6 109.477 H7 C2 H8 109.477
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.379      
2 C -0.379      
3 Br -0.095      
4 Br -0.095      
5 H 0.237      
6 H 0.237      
7 H 0.237      
8 H 0.237      


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 -49.210 1.161 0.000
y 1.161 -55.681 0.000
z 0.000 0.000 -49.957
Traceless
 xyz
x 3.609 1.161 0.000
y 1.161 -6.097 0.000
z 0.000 0.000 2.488
Polar
3z2-r24.977
x2-y26.471
xy1.161
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 8.268 -1.686 0.000
y -1.686 13.826 0.000
z 0.000 0.000 7.459


<r2> (average value of r2) Å2
<r2> 414.483
(<r2>)1/2 20.359