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

using model chemistry: CCD/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-2609.371940
Energy at 298.15K-2609.375455
HF Energy-2609.053554
Nuclear repulsion energy81.329138
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/6-31G(2df,p)
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' 3248 3076 2.77      
2 A' 1433 1358 18.35      
3 A' 754 714 13.68      
4 A' 68 64 59.93      
5 A" 3396 3217 1.01      
6 A" 959 908 0.62      

Unscaled Zero Point Vibrational Energy (zpe) 4929.0 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 4668.7 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 CCD/6-31G(2df,p)
ABC
9.34120 0.38427 0.36911

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.001 1.470 0.000
Br2 -0.001 -0.365 0.000
H3 0.028 1.984 0.946
H4 0.028 1.984 -0.946

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.83591.07681.0768
Br21.83592.53312.5331
H31.07682.53311.8917
H41.07682.53311.8917

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 118.499 Br2 C1 H4 118.499
H3 C1 H4 122.900
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCD/6-31G(2df,p)
 hartrees
Energy at 0K-2609.371940
Energy at 298.15K 
HF Energy-2609.053541
Nuclear repulsion energy81.350813
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/6-31G(2df,p)
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 3248 3077 2.73      
2 A1 1434 1358 18.35      
3 A1 755 715 13.61      
4 B1 35i 33i 60.29      
5 B2 3397 3217 1.02      
6 B2 959 908 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 4878.6 cm-1
Scaled (by 0.9472) Zero Point Vibrational Energy (zpe) 4621.0 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/6-31G(2df,p)
ABC
9.34807 0.38449 0.36930

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.470
Br2 0.000 0.000 0.365
H3 0.000 0.946 -1.984
H4 0.000 -0.946 -1.984

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.83531.07681.0768
Br21.83532.53312.5331
H31.07682.53311.8917
H41.07682.53311.8917

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 118.546 Br2 C1 H4 118.546
H3 C1 H4 122.909
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability