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All results from a given calculation for CFBr3 (fluorotribromomethane)

using model chemistry: MP2=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 MP2=FULL/6-31G*
 hartrees
Energy at 0K-7847.670411
Energy at 298.15K-7847.679331
HF Energy-7846.930411
Nuclear repulsion energy989.793803
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 MP2=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 1123 1058 143.61      
2 A1 402 379 0.42      
3 A1 226 213 0.16      
4 E 755 711 190.79      
4 E 755 711 190.79      
5 E 309 291 0.00      
5 E 309 291 0.00      
6 E 159 150 0.02      
6 E 159 150 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 2098.4 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 1977.1 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 MP2=FULL/6-31G*
ABC
0.03583 0.03583 0.02107

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.437
F2 0.000 0.000 1.786
Br3 0.000 1.838 -0.178
Br4 1.592 -0.919 -0.178
Br5 -1.592 -0.919 -0.178

Atom - Atom Distances (Å)
  C1 F2 Br3 Br4 Br5
C11.34951.93841.93841.9384
F21.34952.69032.69032.6903
Br31.93842.69033.18413.1841
Br41.93842.69033.18413.1841
Br51.93842.69033.18413.1841

picture of fluorotribromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 Br3 108.488 F2 C1 Br4 108.488
F2 C1 Br5 108.488 Br3 C1 Br4 110.436
Br3 C1 Br5 110.436 Br4 C1 Br5 110.436
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability