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

using model chemistry: B3LYP/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 B3LYP/6-311G**
 hartrees
Energy at 0K-5186.945110
Energy at 298.15K 
HF Energy-5186.945110
Nuclear repulsion energy334.899195
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 B3LYP/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' 3214 3107 0.64 100.17 0.29 0.45
2 A' 614 594 9.08 6.04 0.37 0.54
3 A' 417 403 31.45 12.45 0.08 0.15
4 A' 185 178 0.11 4.74 0.54 0.70
5 A" 1189 1149 61.01 1.78 0.75 0.86
6 A" 749 724 146.58 1.90 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3183.8 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 3078.1 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 B3LYP/6-311G**
ABC
1.28186 0.04019 0.03900

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.830 0.000
H2 -0.481 1.794 0.000
Br3 0.006 -0.097 1.630
Br4 0.006 -0.097 -1.630

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08041.87491.8749
H21.08042.54342.5434
Br31.87492.54343.2599
Br41.87492.54343.2599

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 116.166 H2 C1 Br4 116.166
Br3 C1 Br4 120.765
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.339      
2 H 0.198      
3 Br 0.071      
4 Br 0.071      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.504 0.631 0.000 0.808
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.601 -0.959 0.000
y -0.959 -40.879 0.000
z 0.000 0.000 -41.295
Traceless
 xyz
x -2.513 -0.959 0.000
y -0.959 1.569 0.000
z 0.000 0.000 0.945
Polar
3z2-r21.889
x2-y2-2.722
xy-0.959
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.440 -0.157 0.000
y -0.157 4.932 0.000
z 0.000 0.000 10.073


<r2> (average value of r2) Å2
<r2> 220.394
(<r2>)1/2 14.846