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

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

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at CCD/6-31+G**
 hartrees
Energy at 0K-7747.996715
Energy at 298.15K 
HF Energy-7747.517967
Nuclear repulsion energy784.245269
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 CCD/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 A1 351 331 0.53      
2 A1 237 223 0.32      
3 E 786 741 116.42      
3 E 786 741 116.42      
4 E 165 156 0.01      
4 E 165 156 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 1245.0 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 1173.1 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 CCD/6-31+G**
ABC
0.04150 0.04150 0.02082

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.335
Br2 0.000 1.849 -0.019
Br3 1.601 -0.925 -0.019
Br4 -1.601 -0.925 -0.019

Atom - Atom Distances (Å)
  C1 Br2 Br3 Br4
C11.88271.88271.8827
Br21.88273.20293.2029
Br31.88273.20293.2029
Br41.88273.20293.2029

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 116.555 Br2 C1 Br4 116.555
Br3 C1 Br4 116.555
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability