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All results from a given calculation for CFBr3 (fluorotribromomethane)

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-7817.955295
Energy at 298.15K-7817.964165
HF Energy-7817.327334
Nuclear repulsion energy985.099135
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/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 1121 1072 83.82      
2 A1 400 382 0.37      
3 A1 217 208 0.00      
4 E 771 737 161.05      
4 E 771 737 161.04      
5 E 293 281 0.88      
5 E 293 281 0.88      
6 E 153 146 0.01      
6 E 153 146 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 2085.5 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 1994.8 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/3-21G*
ABC
0.03547 0.03547 0.02103

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.451
F2 0.000 0.000 1.837
Br3 0.000 1.840 -0.183
Br4 1.594 -0.920 -0.183
Br5 -1.594 -0.920 -0.183

Atom - Atom Distances (Å)
  C1 F2 Br3 Br4 Br5
C11.38531.94651.94651.9465
F21.38532.73242.73242.7324
Br31.94652.73243.18713.1871
Br41.94652.73243.18713.1871
Br51.94652.73243.18713.1871

picture of fluorotribromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 Br3 109.029 F2 C1 Br4 109.029
F2 C1 Br5 109.029 Br3 C1 Br4 109.910
Br3 C1 Br5 109.910 Br4 C1 Br5 109.910
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability