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

using model chemistry: MP2=FULL/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 MP2=FULL/6-311G*
 hartrees
Energy at 0K-2612.007323
Energy at 298.15K-2612.011201
HF Energy-2611.356342
Nuclear repulsion energy80.786477
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 MP2=FULL/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' 3228 3057 7.31      
2 A' 1446 1370 18.36      
3 A' 731 692 20.87      
4 A' 312 295 80.85      
5 A" 3385 3206 0.06      
6 A" 979 927 2.52      

Unscaled Zero Point Vibrational Energy (zpe) 5039.9 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 4773.3 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 MP2=FULL/6-311G*
ABC
9.17338 0.37894 0.36436

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.006 1.484 0.000
Br2 -0.006 -0.368 0.000
H3 0.129 1.980 0.947
H4 0.129 1.980 -0.947

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85201.07771.0777
Br21.85202.53542.5354
H31.07772.53541.8945
H41.07772.53541.8945

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 117.395 Br2 C1 H4 117.395
H3 C1 H4 123.031
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2=FULL/6-311G*
 hartrees
Energy at 0K-2612.007273
Energy at 298.15K 
HF Energy-2611.356145
Nuclear repulsion energy80.854231
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 MP2=FULL/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 3236 3065 6.10 105.81 0.14 0.24
2 A1 1445 1369 19.20 1.07 0.74 0.85
3 A1 734 695 19.46 5.61 0.25 0.41
4 B1 225i 214i 93.51 0.04 0.75 0.86
5 B2 3396 3216 0.29 53.11 0.75 0.86
6 B2 973 921 2.73 4.03 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4779.1 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 4526.3 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 MP2=FULL/6-311G*
ABC
9.25263 0.37962 0.36466

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.482
Br2 0.000 0.000 0.368
H3 0.000 0.951 -1.987
H4 0.000 -0.951 -1.987

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84921.07691.0769
Br21.84922.53962.5396
H31.07692.53961.9015
H41.07692.53961.9015

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 118.009 Br2 C1 H4 118.009
H3 C1 H4 123.982
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability