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

using model chemistry: CCD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-2611.862975
Energy at 298.15K-2611.866539
HF Energy-2611.458987
Nuclear repulsion energy81.039377
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 CCD/aug-cc-pVTZ
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' 3215 3077 4.64      
2 A' 1414 1353 19.71      
3 A' 729 698 15.22      
4 A' 101 97 60.48      
5 A" 3365 3220 1.34      
6 A" 940 900 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 4881.8 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 4671.9 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 CCD/aug-cc-pVTZ
ABC
9.29320 0.38134 0.36636

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.002 1.478 0.000
Br2 -0.002 -0.367 0.000
H3 0.043 1.982 0.948
H4 0.043 1.982 -0.948

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84511.07441.0744
Br21.84512.53352.5335
H31.07442.53351.8956
H41.07442.53351.8956

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 117.977 Br2 C1 H4 117.977
H3 C1 H4 123.806
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-2611.862974
Energy at 298.15K 
HF Energy-2611.458964
Nuclear repulsion energy81.054019
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 CCD/aug-cc-pVTZ
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 3216 3078 4.56      
2 A1 1414 1353 19.81      
3 A1 730 699 15.08      
4 B1 69i 66i 61.30      
5 B2 3366 3221 1.39      
6 B2 939 899 0.64      

Unscaled Zero Point Vibrational Energy (zpe) 4797.8 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 4591.5 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 CCD/aug-cc-pVTZ
ABC
9.30465 0.38148 0.36646

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.478
Br2 0.000 0.000 0.367
H3 0.000 0.948 -1.983
H4 0.000 -0.948 -1.983

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84461.07441.0744
Br21.84462.53402.5340
H31.07442.53401.8961
H41.07442.53401.8961

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