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

using model chemistry: CISD/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 CISD/6-311G*
 hartrees
Energy at 0K-2611.601911
Energy at 298.15K-2611.605729
HF Energy-2611.356423
Nuclear repulsion energy80.421633
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/6-311G*
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' 3226 2985 7.61      
2 A' 1445 1337 21.32      
3 A' 719 665 17.79      
4 A' 269 249 77.70      
5 A" 3377 3125 0.06      
6 A" 971 899 2.06      

Unscaled Zero Point Vibrational Energy (zpe) 5003.3 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 4629.6 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/6-311G*
ABC
9.19231 0.37518 0.36081

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.006 1.492 0.000
Br2 -0.006 -0.369 0.000
H3 0.113 1.990 0.948
H4 0.113 1.990 -0.948

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86141.07761.0776
Br21.86142.54602.5460
H31.07762.54601.8960
H41.07762.54601.8960

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 117.553 Br2 C1 H4 117.553
H3 C1 H4 123.214
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CISD/6-311G*
 hartrees
Energy at 0K-2611.601881
Energy at 298.15K 
HF Energy-2611.356263
Nuclear repulsion energy80.467835
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/6-311G*
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 3231 2989 6.74      
2 A1 1444 1336 22.07      
3 A1 721 667 16.80      
4 B1 196i 181i 86.87      
5 B2 3385 3132 0.00      
6 B2 967 894 2.19      

Unscaled Zero Point Vibrational Energy (zpe) 4775.2 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 4418.5 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 CISD/6-311G*
ABC
9.25158 0.37564 0.36098

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.490
Br2 0.000 0.000 0.369
H3 0.000 0.951 -1.996
H4 0.000 -0.951 -1.996

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85941.07701.0770
Br21.85942.54942.5494
H31.07702.54941.9016
H41.07702.54941.9016

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