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

using model chemistry: B3LYP/SDD

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/SDD
 hartrees
Energy at 0K-52.609876
Energy at 298.15K-52.613646
HF Energy-52.609876
Nuclear repulsion energy20.566784
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/SDD
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' 3191 3068 8.61      
2 A' 1374 1321 21.03      
3 A' 650 625 24.63      
4 A' 269 259 163.24      
5 A" 3377 3246 1.71      
6 A" 931 895 5.24      

Unscaled Zero Point Vibrational Energy (zpe) 4895.7 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 4706.2 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/SDD
ABC
8.99370 0.35419 0.34077

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.540 0.000
Br2 0.000 -0.380 0.000
H3 -0.000 2.032 0.964
H4 -0.000 2.032 -0.964

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.92021.08251.0825
Br21.92022.59772.5977
H31.08252.59771.9286
H41.08252.59771.9286

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 117.026 Br2 C1 H4 117.026
H3 C1 H4 125.947
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.578      
2 Br 0.055      
3 H 0.261      
4 H 0.261      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.001 1.232 0.000 1.232
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.491 -0.002 0.000
y -0.002 -18.104 0.000
z 0.000 0.000 -21.040
Traceless
 xyz
x -3.919 -0.002 0.000
y -0.002 4.161 0.000
z 0.000 0.000 -0.242
Polar
3z2-r2-0.485
x2-y2-5.387
xy-0.002
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.139 0.000 0.000
y 0.000 5.785 0.000
z 0.000 0.000 1.798


<r2> (average value of r2) Å2
<r2> 38.400
(<r2>)1/2 6.197

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at B3LYP/SDD
 hartrees
Energy at 0K-52.609874
Energy at 298.15K 
HF Energy-52.609874
Nuclear repulsion energy20.565626
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/SDD
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 3190 3066 8.60 127.81 0.13 0.23
2 A1 1373 1320 21.07 0.54 0.43 0.60
3 A1 650 624 24.66 14.13 0.37 0.54
4 B1 267 257 163.28 1.65 0.75 0.86
5 B2 3376 3245 1.69 48.54 0.75 0.86
6 B2 930 894 5.24 5.64 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4892.4 cm-1
Scaled (by 0.9613) Zero Point Vibrational Energy (zpe) 4703.1 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 B3LYP/SDD
ABC
8.99103 0.35414 0.34072

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.540
Br2 0.000 0.000 0.380
H3 0.000 0.964 -2.032
H4 0.000 -0.964 -2.032

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.92041.08251.0825
Br21.92042.59772.5977
H31.08252.59771.9289
H41.08252.59771.9289

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 117.009 Br2 C1 H4 117.009
H3 C1 H4 125.982
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.578      
2 Br 0.055      
3 H 0.261      
4 H 0.261      


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 -1.232 1.232
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.491 0.000 0.000
y 0.000 -21.039 0.000
z 0.000 0.000 -18.104
Traceless
 xyz
x -3.919 0.000 0.000
y 0.000 -0.242 0.000
z 0.000 0.000 4.161
Polar
3z2-r28.322
x2-y2-2.452
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.139 0.000 0.000
y 0.000 1.798 0.000
z 0.000 0.000 5.786


<r2> (average value of r2) Å2
<r2> 38.403
(<r2>)1/2 6.197