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All results from a given calculation for CHBr2 (dibromomethyl radical)

using model chemistry: B3LYP/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B3LYP/Def2TZVPP
 hartrees
Energy at 0K-5187.025106
Energy at 298.15K 
HF Energy-5187.025106
Nuclear repulsion energy336.397263
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 B3LYP/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3217 3097 0.75 96.04 0.24 0.39
2 A' 614 591 6.36 4.95 0.16 0.28
3 A' 395 380 23.91 10.91 0.09 0.16
4 A' 184 177 0.11 3.45 0.46 0.63
5 A" 1179 1135 57.94 0.31 0.75 0.86
6 A" 759 730 128.42 1.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3174.0 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 3055.3 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 B3LYP/Def2TZVPP
ABC
1.29290 0.04055 0.03934

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.825 0.000
H2 -0.455 1.799 0.000
Br3 0.006 -0.096 1.623
Br4 0.006 -0.096 -1.623

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07821.86601.8660
H21.07822.53772.5377
Br31.86602.53773.2453
Br41.86602.53773.2453

picture of dibromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 116.504 H2 C1 Br4 116.504
Br3 C1 Br4 120.822
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.177      
2 H 0.148      
3 Br 0.015      
4 Br 0.015      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.397 0.640 0.000 0.753
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.500 -0.872 0.000
y -0.872 -40.870 0.000
z 0.000 0.000 -41.600
Traceless
 xyz
x -2.264 -0.872 0.000
y -0.872 1.680 0.000
z 0.000 0.000 0.585
Polar
3z2-r21.169
x2-y2-2.629
xy-0.872
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 5.240 -0.082 0.000
y -0.082 6.327 0.000
z 0.000 0.000 11.190


<r2> (average value of r2) Å2
<r2> 218.718
(<r2>)1/2 14.789