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

using model chemistry: B3LYP/LANL2DZ

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/LANL2DZ
 hartrees
Energy at 0K-64.949691
Energy at 298.15K 
HF Energy-64.949691
Nuclear repulsion energy36.430580
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/LANL2DZ
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' 3248 3122 1.77 113.74 0.23 0.38
2 A' 578 556 21.37 9.42 0.50 0.67
3 A' 393 378 46.06 12.36 0.03 0.05
4 A' 177 170 0.09 8.65 0.60 0.75
5 A" 1188 1142 55.62 1.46 0.75 0.86
6 A" 707 680 155.04 4.77 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3145.7 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 3023.6 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/LANL2DZ
ABC
1.21771 0.03763 0.03653

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/LANL2DZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.855 0.000
H2 -0.480 1.825 0.000
Br3 0.006 -0.099 1.684
Br4 0.006 -0.099 -1.684

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.08541.93581.9358
H21.08542.60332.6033
Br31.93582.60333.3687
Br41.93582.60333.3687

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 116.148 H2 C1 Br4 116.148
Br3 C1 Br4 120.943
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/LANL2DZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.446      
2 H 0.298      
3 Br 0.074      
4 Br 0.074      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.690 0.765 0.000 1.030
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -37.586 -1.184 0.000
y -1.184 -34.546 0.000
z 0.000 0.000 -35.843
Traceless
 xyz
x -2.391 -1.184 0.000
y -1.184 2.169 0.000
z 0.000 0.000 0.223
Polar
3z2-r20.445
x2-y2-3.040
xy-1.184
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.355 -0.174 0.000
y -0.174 3.414 0.000
z 0.000 0.000 9.620


<r2> (average value of r2) Å2
<r2> 70.283
(<r2>)1/2 8.383