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All results from a given calculation for CHBr2 (dibromomethyl radical)

using model chemistry: HF/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/6-311G**
 hartrees
Energy at 0K-5183.142294
Energy at 298.15K 
HF Energy-5183.142294
Nuclear repulsion energy336.518448
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 HF/6-311G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3376 3067 0.91 94.93 0.26 0.42
2 A' 649 590 9.88 7.62 0.22 0.36
3 A' 503 457 18.51 10.73 0.10 0.19
4 A' 195 177 0.11 4.04 0.53 0.69
5 A" 1292 1174 87.66 1.21 0.75 0.86
6 A" 823 747 101.31 5.22 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3418.4 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 3105.6 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 HF/6-311G**
ABC
1.27142 0.04067 0.03944

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.836 0.000
H2 -0.488 1.786 0.000
Br3 0.006 -0.097 1.620
Br4 0.006 -0.097 -1.620

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07101.86961.8696
H21.07102.53282.5328
Br31.86962.53283.2404
Br41.86962.53283.2404

picture of dibromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 116.270 H2 C1 Br4 116.270
Br3 C1 Br4 120.132
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.246      
2 H 0.191      
3 Br 0.028      
4 Br 0.028      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.458 0.982 0.000 1.084
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.918 -0.927 0.000
y -0.927 -40.846 0.000
z 0.000 0.000 -42.549
Traceless
 xyz
x -2.221 -0.927 0.000
y -0.927 2.387 0.000
z 0.000 0.000 -0.167
Polar
3z2-r2-0.333
x2-y2-3.072
xy-0.927
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.331 -0.165 0.000
y -0.165 4.673 0.000
z 0.000 0.000 8.809


<r2> (average value of r2) Å2
<r2> 218.541
(<r2>)1/2 14.783