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

using model chemistry: MP4=FULL/3-21G

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=FULL/3-21G
Rotational Constants (cm-1) from geometry optimized at MP4=FULL/3-21G
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP4=FULL/3-21G
 hartrees
Energy at 0K-2598.949769
Energy at 298.15K 
HF Energy-2598.814523
Nuclear repulsion energy77.793533
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=FULL/3-21G
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 3194 3127        
2 A1 1432 1402        
3 A1 648 635        
4 B1 139i 136i        
5 B2 3353 3282        
6 B2 908 889        

Unscaled Zero Point Vibrational Energy (zpe) 4698.6 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 4599.0 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 MP4=FULL/3-21G
ABC
9.14019 0.34900 0.33616

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/3-21G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.550
Br2 0.000 0.000 0.383
H3 0.000 0.957 -2.053
H4 0.000 -0.957 -2.053

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.93321.08061.0806
Br21.93322.61692.6169
H31.08062.61691.9131
H41.08062.61691.9131

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 117.722 Br2 C1 H4 117.722
H3 C1 H4 124.557
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability