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

using model chemistry: MP4/aug-cc-pVDZ

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 MP4/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3212 3138        
2 A' 1432 1399        
3 A' 694 678        
4 A' 396 387        
5 A" 3362 3285        
6 A" 955 933        

Unscaled Zero Point Vibrational Energy (zpe) 5025.3 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 4909.3 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 MP4/aug-cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP4/aug-cc-pVDZ
 hartrees
Energy at 0K-2611.671420
Energy at 298.15K 
HF Energy-2611.372642
Nuclear repulsion energy80.099484
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 MP4/6-31G*
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 3226 3152        
2 A1 1430 1397        
3 A1 698 682        
4 B1 293i 286i        
5 B2 3381 3303        
6 B2 944 922        

Unscaled Zero Point Vibrational Energy (zpe) 4693.2 cm-1
Scaled (by 0.9769) Zero Point Vibrational Energy (zpe) 4584.8 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 MP4/aug-cc-pVDZ
ABC
8.99812 0.37286 0.35802

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/aug-cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.496
Br2 0.000 0.000 0.371
H3 0.000 0.964 -2.003
H4 0.000 -0.964 -2.003

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86641.08951.0895
Br21.86642.56222.5622
H31.08952.56221.9282
H41.08952.56221.9282

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 117.760 Br2 C1 H4 117.760
H3 C1 H4 124.480
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability