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

using model chemistry: PBE1PBE/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at PBE1PBE/TZVP
 hartrees
Energy at 0K-7759.569902
Energy at 298.15K 
HF Energy-7759.569902
Nuclear repulsion energy786.072299
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 PBE1PBE/TZVP
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 315 302 0.83 14.39 0.06 0.11
2 A1 233 224 1.47 0.53 0.74 0.85
3 E 788 756 149.18 0.94 0.75 0.86
3 E 788 756 149.19 0.94 0.75 0.86
4 E 162 155 0.00 3.62 0.75 0.86
4 E 162 155 0.00 3.62 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1223.2 cm-1
Scaled (by 0.9596) Zero Point Vibrational Energy (zpe) 1173.8 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 PBE1PBE/TZVP
ABC
0.04163 0.04163 0.02086

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.271
Br2 0.000 1.847 -0.015
Br3 1.600 -0.924 -0.015
Br4 -1.600 -0.924 -0.015

Atom - Atom Distances (Å)
  C1 Br2 Br3 Br4
C11.86951.86951.8695
Br21.86953.19993.1999
Br31.86953.19993.1999
Br41.86953.19993.1999

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 117.699 Br2 C1 Br4 117.699
Br3 C1 Br4 117.699
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.095      
2 Br 0.032      
3 Br 0.032      
4 Br 0.032      


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 -0.261 0.261
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -57.692 0.000 0.000
y 0.000 -57.692 0.000
z 0.000 0.000 -61.042
Traceless
 xyz
x 1.675 0.000 0.000
y 0.000 1.675 0.000
z 0.000 0.000 -3.349
Polar
3z2-r2-6.699
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 11.178 0.000 0.000
y 0.000 11.178 0.000
z 0.000 0.000 5.331


<r2> (average value of r2) Å2
<r2> 395.573
(<r2>)1/2 19.889