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

using model chemistry: MP4=FULL/6-31G*

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/6-31G*
Rotational Constants (cm-1) from geometry optimized at MP4=FULL/6-31G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP4=FULL/6-31G*
 hartrees
Energy at 0K-2609.146422
Energy at 298.15K 
HF Energy-2608.866342
Nuclear repulsion energy80.168255
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/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 3227 3103        
2 A1 1432 1377        
3 A1 701 675        
4 B1 278i 268i        
5 B2 3382 3252        
6 B2 945 909        

Unscaled Zero Point Vibrational Energy (zpe) 4704.1 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 4523.4 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/6-31G*
ABC
9.16565 0.37290 0.35832

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.496
Br2 0.000 0.000 0.371
H3 0.000 0.955 -2.002
H4 0.000 -0.955 -2.002

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86671.08091.0809
Br21.86672.55752.5575
H31.08092.55751.9105
H41.08092.55751.9105

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 117.900 Br2 C1 H4 117.900
H3 C1 H4 124.200
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability