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All results from a given calculation for CFBr3 (fluorotribromomethane)

using model chemistry: MP4=FULL/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 MP4=FULL/6-31G*
 hartrees
Energy at 0K-7847.720356
Energy at 298.15K-7847.729212
HF Energy-7846.929559
Nuclear repulsion energy984.223553
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 MP4=FULL/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 1104 1061        
2 A1 391 376        
3 A1 221 213        
4 E 736 708        
4 E 736 708        
5 E 302 290        
5 E 302 290        
6 E 156 150        
6 E 156 150        

Unscaled Zero Point Vibrational Energy (zpe) 2051.1 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 1972.3 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 MP4=FULL/6-31G*
ABC
0.03543 0.03543 0.02083

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.440
F2 0.000 0.000 1.795
Br3 0.000 1.849 -0.179
Br4 1.601 -0.924 -0.179
Br5 -1.601 -0.924 -0.179

Atom - Atom Distances (Å)
  C1 F2 Br3 Br4 Br5
C11.35461.94991.94991.9499
F21.35462.70462.70462.7046
Br31.94992.70463.20253.2025
Br41.94992.70463.20253.2025
Br51.94992.70463.20253.2025

picture of fluorotribromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 Br3 108.517 F2 C1 Br4 108.517
F2 C1 Br5 108.517 Br3 C1 Br4 110.408
Br3 C1 Br5 110.408 Br4 C1 Br5 110.408
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability