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

using model chemistry: ROMP2/cc-pVDZ

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 ROMP2/cc-pVDZ
 hartrees
Energy at 0K-2611.616452
Energy at 298.15K-2611.620229
HF Energy-2611.362758
Nuclear repulsion energy80.548422
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 ROMP2/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3228 3228        
2 A' 1407 1407        
3 A' 730 730        
4 A' 238 238        
5 A" 3388 3388        
6 A" 943 943        

Unscaled Zero Point Vibrational Energy (zpe) 4966.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4966.7 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 ROMP2/cc-pVDZ
ABC
9.00238 0.37730 0.36245

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.005 1.486 0.000
Br2 -0.005 -0.369 0.000
H3 0.111 1.991 0.958
H4 0.111 1.991 -0.958

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85481.08941.0894
Br21.85482.54952.5495
H31.08942.54951.9167
H41.08942.54951.9167

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 117.608 Br2 C1 H4 117.608
H3 C1 H4 123.212
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at ROMP2/cc-pVDZ
 hartrees
Energy at 0K-2611.616431
Energy at 298.15K 
HF Energy-2611.362403
Nuclear repulsion energy80.586653
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 ROMP2/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3233 3233        
2 A1 1408 1408        
3 A1 732 732        
4 B1 162i 162i        
5 B2 3394 3394        
6 B2 939 939        

Unscaled Zero Point Vibrational Energy (zpe) 4771.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4771.9 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 ROMP2/cc-pVDZ
ABC
9.05726 0.37768 0.36257

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROMP2/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.484
Br2 0.000 0.000 0.369
H3 0.000 0.961 -1.997
H4 0.000 -0.961 -1.997

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85301.08891.0889
Br21.85302.55302.5530
H31.08892.55301.9219
H41.08892.55301.9219

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 118.060 Br2 C1 H4 118.060
H3 C1 H4 123.880
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROMP2/cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.149      
2 Br -0.067      
3 H 0.108      
4 H 0.108      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 42.836
(<r2>)1/2 6.545