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All results from a given calculation for CBr3 (tribromomethyl radical)

using model chemistry: B3LYP/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at B3LYP/SDD
 hartrees
Energy at 0K-78.142399
Energy at 298.15K 
HF Energy-78.142399
Nuclear repulsion energy57.658016
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/SDD
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 297 285 1.57 23.43 0.01 0.02
2 A1 235 226 0.71 10.14 0.30 0.47
3 E 697 670 193.83 2.65 0.75 0.86
3 E 697 670 193.86 2.65 0.75 0.86
4 E 154 148 0.07 7.40 0.75 0.86
4 E 154 148 0.07 7.40 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1117.0 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 1073.7 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 B3LYP/SDD
ABC
0.03861 0.03861 0.01937

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/SDD

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.323
Br2 0.000 1.917 -0.018
Br3 1.661 -0.959 -0.018
Br4 -1.661 -0.959 -0.018

Atom - Atom Distances (Å)
  C1 Br2 Br3 Br4
C11.94761.94761.9476
Br21.94763.32123.3212
Br31.94763.32123.3212
Br41.94763.32123.3212

picture of tribromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 117.001 Br2 C1 Br4 117.001
Br3 C1 Br4 117.001
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.462      
2 Br 0.154      
3 Br 0.154      
4 Br 0.154      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -48.899 0.000 0.000
y 0.000 -48.899 0.000
z 0.000 0.000 -51.904
Traceless
 xyz
x 1.502 0.000 0.000
y 0.000 1.502 0.000
z 0.000 0.000 -3.004
Polar
3z2-r2-6.009
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 10.601 0.000 0.000
y 0.000 10.601 0.000
z 0.000 0.000 2.923


<r2> (average value of r2) Å2
<r2> 109.009
(<r2>)1/2 10.441