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All results from a given calculation for CFBr3 (fluorotribromomethane)

using model chemistry: HF/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 HF/3-21G
 hartrees
Energy at 0K-7816.667422
Energy at 298.15K-7816.676383
HF Energy-7816.667422
Nuclear repulsion energy968.956346
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 HF/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 1191 1079 141.93      
2 A1 385 349 1.59      
3 A1 227 205 0.00      
4 E 806 729 197.62      
4 E 806 729 197.62      
5 E 311 281 0.90      
5 E 311 281 0.90      
6 E 155 141 0.02      
6 E 155 141 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 2173.0 cm-1
Scaled (by 0.9056) Zero Point Vibrational Energy (zpe) 1967.9 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 HF/3-21G
ABC
0.03436 0.03436 0.02001

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.413
F2 0.000 0.000 1.778
Br3 0.000 1.886 -0.176
Br4 1.634 -0.943 -0.176
Br5 -1.634 -0.943 -0.176

Atom - Atom Distances (Å)
  C1 F2 Br3 Br4 Br5
C11.36551.97611.97611.9761
F21.36552.71622.71622.7162
Br31.97612.71623.26723.2672
Br41.97612.71623.26723.2672
Br51.97612.71623.26723.2672

picture of fluorotribromomethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
F2 C1 Br3 107.339 F2 C1 Br4 107.339
F2 C1 Br5 107.339 Br3 C1 Br4 111.517
Br3 C1 Br5 111.517 Br4 C1 Br5 111.517
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.318      
2 F -0.333      
3 Br 0.217      
4 Br 0.217      
5 Br 0.217      


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 -1.139 1.139
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -63.766 0.000 0.000
y 0.000 -63.766 0.000
z 0.000 0.000 -68.116
Traceless
 xyz
x 2.175 0.000 0.000
y 0.000 2.175 0.000
z 0.000 0.000 -4.349
Polar
3z2-r2-8.699
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 8.524 0.000 0.000
y 0.000 8.524 0.000
z 0.000 0.000 3.370


<r2> (average value of r2) Å2
<r2> 447.092
(<r2>)1/2 21.145