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

using model chemistry: PM3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description

Conformer 1 (CS)

Jump to S1C2
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K0.059022
HF Energy0.059022
Nuclear repulsion energy31.423640
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 PM3
Rotational Constants (cm-1) from geometry optimized at PM3
ABC
9.27228 0.37309 0.35865

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 1.495 0.000
Br2 0.000 -0.371 0.000
H3 -0.001 2.004 0.950
H4 -0.001 2.004 -0.950

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86561.07751.0775
Br21.86562.55752.5575
H31.07752.55751.8994
H41.07752.55751.8994

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 118.191 Br2 C1 H4 118.191
H3 C1 H4 123.617
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at PM3
 hartrees
Energy at 0K 
Energy at 298.15K0.133460
HF Energy0.133460
Nuclear repulsion energy31.295265
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 PM3
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 3170 3087 0.08 178.49 0.75 0.86
2 A1 1295 1262 37.95 374.48 0.26 0.41
3 A1 583 568 128.70 249.96 0.32 0.49
4 B1 1192 1161 29.62 169.58 0.75 0.86
5 B2 3188 3105 1.57 52.55 0.75 0.86
6 B2 698 679 13.41 20.61 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 5062.4 cm-1
Scaled (by 0.974) Zero Point Vibrational Energy (zpe) 4930.8 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 PM3
ABC
10.11761 0.36050 0.34809

See section I.F.4 to change rotational constant units
Geometric Data calculated at PM3

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.508
Br2 0.000 0.000 0.378
H3 0.000 0.909 -2.092
H4 0.000 -0.909 -2.092

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.88561.08071.0807
Br21.88562.63182.6318
H31.08072.63181.8184
H41.08072.63181.8184

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 122.722 Br2 C1 H4 122.722
H3 C1 H4 114.555
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability