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All results from a given calculation for CH2Br (bromomethyl radical)

using model chemistry: B3LYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
1 2 no C2V 2A1

Conformer 1 (CS)

Jump to S1C2
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-2610.944769
Energy at 298.15K-2610.948566
HF Energy-2610.944769
Nuclear repulsion energy80.179235
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/6-31G*
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' 3196 3070 5.96      
2 A' 1406 1350 23.92      
3 A' 691 663 20.80      
4 A' 274 263 71.15      
5 A" 3347 3214 0.09      
6 A" 934 897 1.34      

Unscaled Zero Point Vibrational Energy (zpe) 4923.9 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 4728.4 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/6-31G*
ABC
9.08651 0.37302 0.35873

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.006 1.497 0.000
Br2 -0.006 -0.370 0.000
H3 0.126 1.991 0.952
H4 0.126 1.991 -0.952

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86781.08071.0807
Br21.86782.54972.5497
H31.08072.54971.9044
H41.08072.54971.9044

picture of bromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 117.184 Br2 C1 H4 117.184
H3 C1 H4 123.546
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.327      
2 Br -0.055      
3 H 0.191      
4 H 0.191      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.239 1.008 0.000 1.036
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.888 0.508 0.000
y 0.508 -21.412 0.000
z 0.000 0.000 -24.073
Traceless
 xyz
x -3.145 0.508 0.000
y 0.508 3.568 0.000
z 0.000 0.000 -0.424
Polar
3z2-r2-0.847
x2-y2-4.475
xy0.508
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.377 0.062 0.000
y 0.062 5.470 0.000
z 0.000 0.000 3.156


<r2> (average value of r2) Å2
<r2> 42.890
(<r2>)1/2 6.549

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B3LYP/6-31G*
 hartrees
Energy at 0K-2610.944731
Energy at 298.15K 
HF Energy-2610.944731
Nuclear repulsion energy80.220607
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/6-31G*
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 3203 3076 4.70 107.24 0.12 0.22
2 A1 1403 1348 24.77 2.50 0.66 0.80
3 A1 688 661 19.55 9.24 0.23 0.37
4 B1 197i 190i 80.75 0.46 0.75 0.86
5 B2 3357 3223 0.00 59.10 0.75 0.86
6 B2 928 891 1.46 4.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4690.4 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 4504.2 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/6-31G*
ABC
9.15741 0.37343 0.35880

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.495
Br2 0.000 0.000 0.371
H3 0.000 0.956 -1.998
H4 0.000 -0.956 -1.998

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86581.08001.0800
Br21.86582.55432.5543
H31.08002.55431.9113
H41.08002.55431.9113

picture of bromomethyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 117.759 Br2 C1 H4 117.759
H3 C1 H4 124.481
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.331      
2 Br -0.053      
3 H 0.192      
4 H 0.192      


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 -1.016 1.016
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.931 0.000 0.000
y 0.000 -24.037 0.000
z 0.000 0.000 -21.342
Traceless
 xyz
x -3.241 0.000 0.000
y 0.000 -0.400 0.000
z 0.000 0.000 3.641
Polar
3z2-r27.282
x2-y2-1.894
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.359 0.000 0.000
y 0.000 3.147 0.000
z 0.000 0.000 5.453


<r2> (average value of r2) Å2
<r2> 42.878
(<r2>)1/2 6.548