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

using model chemistry: HSEh1PBE/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HSEh1PBE/6-31G**
 hartrees
Energy at 0K-5181.296846
Energy at 298.15K 
HF Energy-5181.296846
Nuclear repulsion energy339.387433
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 HSEh1PBE/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3261 3112 1.17 97.67 0.27 0.43
2 A' 631 602 8.17 5.73 0.25 0.40
3 A' 423 404 26.84 9.68 0.10 0.18
4 A' 192 183 0.08 3.33 0.49 0.66
5 A" 1194 1140 56.85 2.56 0.75 0.86
6 A" 778 743 126.20 1.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3239.7 cm-1
Scaled (by 0.9543) Zero Point Vibrational Energy (zpe) 3091.7 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 HSEh1PBE/6-31G**
ABC
1.25923 0.04152 0.04023

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.839 0.000
H2 -0.490 1.800 0.000
Br3 0.006 -0.098 1.603
Br4 0.006 -0.098 -1.603

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08221.85681.8568
H21.08222.53382.5338
Br31.85682.53383.2069
Br41.85682.53383.2069

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 116.619 H2 C1 Br4 116.619
Br3 C1 Br4 119.432
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.157      
2 H 0.200      
3 Br -0.022      
4 Br -0.022      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.472 0.669 0.000 0.818
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.863 -0.959 0.000
y -0.959 -40.028 0.000
z 0.000 0.000 -40.673
Traceless
 xyz
x -2.513 -0.959 0.000
y -0.959 1.740 0.000
z 0.000 0.000 0.773
Polar
3z2-r21.545
x2-y2-2.835
xy-0.959
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.968 -0.187 0.000
y -0.187 5.228 0.000
z 0.000 0.000 9.533


<r2> (average value of r2) Å2
<r2> 214.072
(<r2>)1/2 14.631