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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at SVWN/6-31+G**
 hartrees
Energy at 0K-5176.260883
Energy at 298.15K 
HF Energy-5176.260883
Nuclear repulsion energy342.295346
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 SVWN/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 A' 3181 3133 3.30 100.42 0.26 0.42
2 A' 622 612 2.98 7.03 0.08 0.15
3 A' 295 290 43.05 7.79 0.10 0.19
4 A' 183 181 1.32 2.58 0.64 0.78
5 A" 1150 1133 43.29 0.84 0.75 0.86
6 A" 795 784 131.39 1.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3113.0 cm-1
Scaled (by 0.9851) Zero Point Vibrational Energy (zpe) 3066.6 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 SVWN/6-31+G**
ABC
1.30994 0.04212 0.04082

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 0.814 0.000
H2 -0.378 1.835 0.000
Br3 0.005 -0.096 1.592
Br4 0.005 -0.096 -1.592

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.09111.83381.8338
H21.09112.53222.5322
Br31.83382.53223.1845
Br41.83382.53223.1845

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 117.674 H2 C1 Br4 117.674
Br3 C1 Br4 120.518
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at SVWN/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.207      
2 H 0.217      
3 Br -0.005      
4 Br -0.005      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.398 0.572 0.000 0.697
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.841 -0.898 0.000
y -0.898 -40.822 0.000
z 0.000 0.000 -41.063
Traceless
 xyz
x -2.898 -0.898 0.000
y -0.898 1.630 0.000
z 0.000 0.000 1.268
Polar
3z2-r22.536
x2-y2-3.018
xy-0.898
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.206 -0.027 0.000
y -0.027 6.209 0.000
z 0.000 0.000 11.117


<r2> (average value of r2) Å2
<r2> 211.778
(<r2>)1/2 14.553