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

using model chemistry: PBEPBEultrafine/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2V 2A1

Conformer 1 (CS)

Jump to S1C2
Vibrational Frequencies calculated at PBEPBEultrafine/6-31G**
Rotational Constants (cm-1) from geometry optimized at PBEPBEultrafine/6-31G**
See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G**
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PBEPBEultrafine/6-31G**
 hartrees
Energy at 0K-2610.482643
Energy at 298.15K 
HF Energy-2610.482643
Nuclear repulsion energy80.366332
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 PBEPBEultrafine/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 3133 3090 3.74 110.16 0.12 0.21
2 A1 1353 1335 17.81 3.04 0.63 0.77
3 A1 693 684 17.17 9.61 0.22 0.37
4 B1 109i 107i 80.04 0.33 0.75 0.86
5 B2 3291 3245 0.03 59.21 0.75 0.86
6 B2 907 895 1.77 4.54 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4633.9 cm-1
Scaled (by 0.9863) Zero Point Vibrational Energy (zpe) 4570.4 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 PBEPBEultrafine/6-31G**
ABC
9.01759 0.37549 0.36048

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.491
Br2 0.000 0.000 0.370
H3 0.000 0.963 -1.995
H4 0.000 -0.963 -1.995

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86021.08711.0871
Br21.86022.55302.5530
H31.08712.55301.9261
H41.08712.55301.9261

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 117.638 Br2 C1 H4 117.638
H3 C1 H4 124.724
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.281      
2 Br -0.042      
3 H 0.161      
4 H 0.161      


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 -0.893 0.893
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.904 0.000 0.000
y 0.000 -23.982 0.000
z 0.000 0.000 -21.443
Traceless
 xyz
x -3.191 0.000 0.000
y 0.000 -0.309 0.000
z 0.000 0.000 3.500
Polar
3z2-r27.000
x2-y2-1.922
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.418 0.000 0.000
y 0.000 3.227 0.000
z 0.000 0.000 5.615


<r2> (average value of r2) Å2
<r2> 42.776
(<r2>)1/2 6.540