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All results from a given calculation for CFBr3 (fluorotribromomethane)

using model chemistry: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-7847.595280
Energy at 298.15K-7847.604215
HF Energy-7846.930360
Nuclear repulsion energy986.405149
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 MP3/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1163 1092 146.54      
2 A1 403 378 0.29      
3 A1 226 212 0.13      
4 E 765 718 176.24      
4 E 765 718 176.24      
5 E 311 292 0.04      
5 E 311 292 0.04      
6 E 159 149 0.01      
6 E 159 149 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 2130.0 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 1999.2 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 MP3/6-31G*
ABC
0.03559 0.03559 0.02088

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.436
F2 0.000 0.000 1.780
Br3 0.000 1.847 -0.177
Br4 1.599 -0.923 -0.177
Br5 -1.599 -0.923 -0.177

Atom - Atom Distances (Å)
  C1 F2 Br3 Br4 Br5
C11.34361.94601.94601.9460
F21.34362.69102.69102.6910
Br31.94602.69103.19863.1986
Br41.94602.69103.19863.1986
Br51.94602.69103.19863.1986

picture of fluorotribromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 Br3 108.386 F2 C1 Br4 108.386
F2 C1 Br5 108.386 Br3 C1 Br4 110.535
Br3 C1 Br5 110.535 Br4 C1 Br5 110.535
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability