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

using model chemistry: MP2/6-311G**

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 MP2/6-311G**
 hartrees
Energy at 0K-2611.609765
Energy at 298.15K-2611.613646
HF Energy-2611.360400
Nuclear repulsion energy80.755139
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 MP2/6-311G**
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' 3227 3066 7.29      
2 A' 1439 1367 21.97      
3 A' 731 695 19.98      
4 A' 313 297 69.45      
5 A" 3382 3214 0.05      
6 A" 970 921 1.93      

Unscaled Zero Point Vibrational Energy (zpe) 5030.2 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 4779.7 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 MP2/6-311G**
ABC
9.16168 0.37866 0.36410

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.006 1.485 0.000
Br2 -0.006 -0.368 0.000
H3 0.130 1.981 0.948
H4 0.130 1.981 -0.948

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85261.07851.0785
Br21.85262.53652.5365
H31.07852.53651.8954
H41.07852.53651.8954

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 117.394 Br2 C1 H4 117.394
H3 C1 H4 122.989
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2/6-311G**
 hartrees
Energy at 0K-2611.609713
Energy at 298.15K 
HF Energy-2611.360251
Nuclear repulsion energy80.823345
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 MP2/6-311G**
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 3236 3075 6.04 110.33 0.13 0.23
2 A1 1439 1367 22.86 1.00 0.75 0.85
3 A1 734 698 18.70 5.56 0.25 0.40
4 B1 226i 215i 80.51 0.04 0.75 0.86
5 B2 3394 3225 0.28 53.71 0.75 0.86
6 B2 964 916 2.13 3.97 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4770.2 cm-1
Scaled (by 0.9502) Zero Point Vibrational Energy (zpe) 4532.7 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 MP2/6-311G**
ABC
9.24391 0.37934 0.36438

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-311G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.482
Br2 0.000 0.000 0.368
H3 0.000 0.951 -1.988
H4 0.000 -0.951 -1.988

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84991.07751.0775
Br21.84992.54082.5408
H31.07752.54081.9024
H41.07752.54081.9024

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 118.021 Br2 C1 H4 118.021
H3 C1 H4 123.957
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability