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All results from a given calculation for CFBr3 (fluorotribromomethane)

using model chemistry: mPW1PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/cc-pVTZ
 hartrees
Energy at 0K-7861.115040
Energy at 298.15K-7861.123953
HF Energy-7861.115040
Nuclear repulsion energy992.134825
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 mPW1PW91/cc-pVTZ
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 1122 1077 165.12      
2 A1 408 391 0.32      
3 A1 221 212 0.31      
4 E 742 711 209.61      
4 E 742 711 209.71      
5 E 312 299 0.19      
5 E 312 299 0.19      
6 E 149 143 0.04      
6 E 149 143 0.04      

Unscaled Zero Point Vibrational Energy (zpe) 2076.9 cm-1
Scaled (by 0.9592) Zero Point Vibrational Energy (zpe) 1992.2 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 mPW1PW91/cc-pVTZ
ABC
0.03601 0.03601 0.02110

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.434
F2 0.000 0.000 1.763
Br3 0.000 1.837 -0.176
Br4 1.591 -0.919 -0.176
Br5 -1.591 -0.919 -0.176

Atom - Atom Distances (Å)
  C1 F2 Br3 Br4 Br5
C11.32871.93581.93581.9358
F21.32872.67102.67102.6710
Br31.93582.67103.18193.1819
Br41.93582.67103.18193.1819
Br51.93582.67103.18193.1819

picture of fluorotribromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 Br3 108.376 F2 C1 Br4 108.376
F2 C1 Br5 108.376 Br3 C1 Br4 110.544
Br3 C1 Br5 110.544 Br4 C1 Br5 110.544
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.088      
2 F -0.108      
3 Br 0.007      
4 Br 0.007      
5 Br 0.007      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.377 0.377
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -62.905 0.000 0.000
y 0.000 -62.905 0.000
z 0.000 0.000 -65.774
Traceless
 xyz
x 1.435 0.000 0.000
y 0.000 1.435 0.000
z 0.000 0.000 -2.869
Polar
3z2-r2-5.738
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.368 0.000 0.000
y 0.000 11.368 0.000
z 0.000 0.000 7.293


<r2> (average value of r2) Å2
<r2> 426.597
(<r2>)1/2 20.654