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

using model chemistry: B3LYPultrafine/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 B3LYPultrafine/6-31G*
 hartrees
Energy at 0K-5182.049225
Energy at 298.15K 
HF Energy-5182.049225
Nuclear repulsion energy336.065346
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 B3LYPultrafine/6-31G*
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' 3234 3098 1.33 98.67 0.28 0.44
2 A' 623 596 11.63 5.35 0.37 0.54
3 A' 458 439 20.81 13.91 0.08 0.15
4 A' 187 179 0.03 3.82 0.47 0.64
5 A" 1188 1138 58.60 2.79 0.75 0.86
6 A" 737 706 137.62 1.99 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3212.8 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 3077.9 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 B3LYPultrafine/6-31G*
ABC
1.23378 0.04071 0.03945

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYPultrafine/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.851 0.000
H2 -0.540 1.786 0.000
Br3 0.007 -0.098 1.619
Br4 0.007 -0.098 -1.619

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08331.87711.8771
H21.08332.54412.5441
Br31.87712.54413.2385
Br41.87712.54413.2385

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 115.890 H2 C1 Br4 115.890
Br3 C1 Br4 119.226
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYPultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.167      
2 H 0.214      
3 Br -0.023      
4 Br -0.023      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.516 0.635 0.000 0.818
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -42.794 -1.007 0.000
y -1.007 -40.188 0.000
z 0.000 0.000 -40.745
Traceless
 xyz
x -2.327 -1.007 0.000
y -1.007 1.581 0.000
z 0.000 0.000 0.746
Polar
3z2-r21.493
x2-y2-2.605
xy-1.007
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.957 -0.209 0.000
y -0.209 5.227 0.000
z 0.000 0.000 9.766


<r2> (average value of r2) Å2
<r2> 217.801
(<r2>)1/2 14.758