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

using model chemistry: B2PLYP/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at B2PLYP/cc-pVDZ
 hartrees
Energy at 0K-5185.996174
Energy at 298.15K 
HF Energy-5185.870431
Nuclear repulsion energy335.912363
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 B2PLYP/cc-pVDZ
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' 3234 3097 1.11 107.71 0.26 0.41
2 A' 632 605 10.89 5.86 0.44 0.61
3 A' 471 451 22.25 11.71 0.05 0.10
4 A' 186 179 0.06 4.48 0.54 0.70
5 A" 1177 1127 57.81 2.39 0.75 0.86
6 A" 771 739 133.46 1.77 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3235.0 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 3098.1 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 B2PLYP/cc-pVDZ
ABC
1.25732 0.04057 0.03934

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.007 0.840 0.000
H2 -0.527 1.791 0.000
Br3 0.007 -0.098 1.622
Br4 0.007 -0.098 -1.622

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.09131.87331.8733
H21.09132.54642.5464
Br31.87332.54643.2442
Br41.87332.54643.2442

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 115.864 H2 C1 Br4 115.864
Br3 C1 Br4 119.968
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.185      
2 H 0.111      
3 Br 0.037      
4 Br 0.037      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.504 0.581 0.000 0.769
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -43.196 -0.966 0.001
y -0.966 -40.655 0.007
z 0.001 0.007 -40.964
Traceless
 xyz
x -2.386 -0.966 0.001
y -0.966 1.425 0.007
z 0.001 0.007 0.961
Polar
3z2-r21.922
x2-y2-2.541
xy-0.966
xz0.001
yz0.007


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.269 -0.204 0.001
y -0.204 4.746 0.003
z 0.001 0.003 9.392


<r2> (average value of r2) Å2
<r2> 218.556
(<r2>)1/2 14.784