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

using model chemistry: CISD/6-31G

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 CISD/6-31G
 hartrees
Energy at 0K-2608.844596
Energy at 298.15K-2608.848161
HF Energy-2608.720726
Nuclear repulsion energy78.123515
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 CISD/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' 3220 3020 3.90      
2 A' 1430 1341 33.05      
3 A' 627 588 16.46      
4 A' 134 126 103.56      
5 A" 3381 3171 0.72      
6 A" 935 877 1.42      

Unscaled Zero Point Vibrational Energy (zpe) 4863.9 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 4561.3 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 CISD/6-31G
ABC
9.08683 0.35245 0.33929

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -1.543 0.000
Br2 0.000 0.381 0.000
H3 -0.000 -2.042 0.959
H4 -0.000 -2.042 -0.959

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.92371.08181.0818
Br21.92372.60662.6066
H31.08182.60661.9187
H41.08182.60661.9187

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 117.523 Br2 C1 H4 117.523
H3 C1 H4 124.955
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CISD/6-31G
 hartrees
Energy at 0K-2608.844596
Energy at 298.15K 
HF Energy-2608.720729
Nuclear repulsion energy78.116166
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 CISD/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 3220 3020 3.89      
2 A1 1430 1341 33.10      
3 A1 627 588 16.51      
4 B1 129 121 103.60      
5 B2 3382 3171 0.70      
6 B2 935 877 1.42      

Unscaled Zero Point Vibrational Energy (zpe) 4861.3 cm-1
Scaled (by 0.9378) Zero Point Vibrational Energy (zpe) 4558.9 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 CISD/6-31G
ABC
9.08159 0.35238 0.33922

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.543
Br2 0.000 0.000 0.381
H3 0.000 0.960 -2.042
H4 0.000 -0.960 -2.042

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.92401.08181.0818
Br21.92402.60642.6064
H31.08182.60641.9193
H41.08182.60641.9193

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 117.487 Br2 C1 H4 117.487
H3 C1 H4 125.026
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability