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

using model chemistry: B2PLYP=FULLultrafine/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at B2PLYP=FULLultrafine/3-21G
 hartrees
Energy at 0K-7721.741024
Energy at 298.15K 
HF Energy-7721.671226
Nuclear repulsion energy760.388721
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 B2PLYP=FULLultrafine/3-21G
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 261 261 0.85 20.38 0.09 0.16
2 A1 228 228 3.98 1.31 0.11 0.20
3 E 763 763 144.42 0.68 0.75 0.86
3 E 763 763 144.41 0.68 0.75 0.86
4 E 155 155 0.03 5.36 0.75 0.86
4 E 155 155 0.03 5.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1161.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1161.7 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 B2PLYP=FULLultrafine/3-21G
ABC
0.03894 0.03894 0.01951

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.264
Br2 0.000 1.910 -0.015
Br3 1.654 -0.955 -0.015
Br4 -1.654 -0.955 -0.015

Atom - Atom Distances (Å)
  C1 Br2 Br3 Br4
C11.93081.93081.9308
Br21.93083.30893.3089
Br31.93083.30893.3089
Br41.93083.30893.3089

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 117.940 Br2 C1 Br4 117.940
Br3 C1 Br4 117.940
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability