return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CBr3 (tribromomethyl radical)

using model chemistry: M06-2X/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at M06-2X/6-311+G(3df,2p)
 hartrees
Energy at 0K-7760.549210
Energy at 298.15K 
HF Energy-7760.549210
Nuclear repulsion energy788.098406
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 M06-2X/6-311+G(3df,2p)
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 318 318 0.47 13.46 0.05 0.10
2 A1 234 234 0.77 0.30 0.32 0.49
3 E 804 804 126.80 1.14 0.75 0.86
3 E 803 803 126.84 1.14 0.75 0.86
4 E 166 166 0.00 1.93 0.75 0.86
4 E 166 166 0.00 1.97 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1245.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1245.1 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 M06-2X/6-311+G(3df,2p)
ABC
0.04185 0.04185 0.02097

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.275
Br2 0.000 1.843 -0.016
Br3 1.596 -0.921 -0.016
Br4 -1.596 -0.921 -0.016

Atom - Atom Distances (Å)
  C1 Br2 Br3 Br4
C11.86531.86531.8653
Br21.86533.19143.1914
Br31.86533.19143.1914
Br41.86533.19143.1914

picture of tribromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 117.620 Br2 C1 Br4 117.620
Br3 C1 Br4 117.620
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.139      
2 Br 0.046      
3 Br 0.046      
4 Br 0.046      


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 -0.157 0.157
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -58.295 0.000 0.000
y 0.000 -58.295 0.000
z 0.000 0.000 -61.299
Traceless
 xyz
x 1.502 0.000 0.000
y 0.000 1.502 0.000
z 0.000 0.000 -3.004
Polar
3z2-r2-6.007
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 13.053 0.000 0.000
y 0.000 13.048 -0.001
z 0.000 -0.001 8.096


<r2> (average value of r2) Å2
<r2> 393.984
(<r2>)1/2 19.849