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

using model chemistry: ROHF/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2H 1Ag
Energy calculated at ROHF/3-21G
 hartrees
Energy at 0K-5197.748034
Energy at 298.15K-5197.758350
HF Energy-5197.748034
Nuclear repulsion energy411.170557
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 ROHF/3-21G
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 3312 3004 0.00      
2 Ag 1640 1487 0.00      
3 Ag 1429 1296 0.00      
4 Ag 1097 995 0.00      
5 Ag 718 651 0.00      
6 Ag 199 180 0.00      
7 Au 3399 3083 0.48      
8 Au 1240 1124 1.60      
9 Au 826 749 7.83      
10 Au 107 97 5.79      
11 Bg 3376 3062 0.00      
12 Bg 1438 1304 0.00      
13 Bg 1014 920 0.00      
14 Bu 3320 3011 7.08      
15 Bu 1637 1485 20.60      
16 Bu 1363 1236 81.37      
17 Bu 633 574 91.66      
18 Bu 193 175 6.97      

Unscaled Zero Point Vibrational Energy (zpe) 13469.5 cm-1
Scaled (by 0.907) Zero Point Vibrational Energy (zpe) 12216.8 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 ROHF/3-21G
ABC
0.94935 0.01904 0.01880

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/3-21G

Point Group is C2h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.498 0.567 0.000
C2 -0.498 -0.567 0.000
Br3 -0.498 2.304 0.000
Br4 0.498 -2.304 0.000
H5 1.108 0.573 0.884
H6 1.108 0.573 -0.884
H7 -1.108 -0.573 0.884
H8 -1.108 -0.573 -0.884

Atom - Atom Distances (Å)
  C1 C2 Br3 Br4 H5 H6 H7 H8
C11.50952.00202.87051.07441.07442.15902.1590
C21.50952.87052.00202.15902.15901.07441.0744
Br32.00202.87054.71362.52152.52153.07053.0705
Br42.87052.00204.71363.07053.07052.52152.5215
H51.07442.15902.52153.07051.76892.49493.0583
H61.07442.15902.52153.07051.76893.05832.4949
H72.15901.07443.07052.52152.49493.05831.7689
H82.15901.07443.07052.52153.05832.49491.7689

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 108.858 C1 C2 H7 112.258
C1 C2 H8 112.258 C2 C1 Br3 108.858
C2 C1 H5 112.258 C2 C1 H6 112.258
Br3 C1 H5 106.132 Br3 C1 H6 106.132
Br4 C2 H7 106.132 Br4 C2 H8 106.132
H5 C1 H6 110.807 H7 C2 H8 110.807
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.613      
2 C -0.613      
3 Br 0.027      
4 Br 0.027      
5 H 0.293      
6 H 0.293      
7 H 0.293      
8 H 0.293      


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 -49.105 2.058 0.000
y 2.058 -58.339 0.000
z 0.000 0.000 -49.581
Traceless
 xyz
x 4.855 2.058 0.000
y 2.058 -8.996 0.000
z 0.000 0.000 4.141
Polar
3z2-r28.282
x2-y29.234
xy2.058
xz0.000
yz0.000


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


<r2> (average value of r2) Å2
<r2> 437.690
(<r2>)1/2 20.921