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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-2612.022779
Energy at 298.15K-2612.026644
HF Energy-2611.360351
Nuclear repulsion energy80.883845
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' 3234 3068 7.02      
2 A' 1439 1365 21.63      
3 A' 734 696 20.26      
4 A' 298 283 70.88      
5 A" 3389 3215 0.09      
6 A" 972 922 1.95      

Unscaled Zero Point Vibrational Energy (zpe) 5032.9 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 4774.2 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
9.17127 0.37997 0.36528

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 1.482 0.000
Br2 -0.006 -0.367 0.000
H3 0.124 1.979 0.948
H4 0.124 1.979 -0.948

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84931.07791.0779
Br21.84932.53332.5333
H31.07792.53331.8958
H41.07792.53331.8958

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 117.419 Br2 C1 H4 117.419
H3 C1 H4 123.136
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-2612.022737
Energy at 298.15K 
HF Energy-2611.360207
Nuclear repulsion energy80.949932
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 3242 3075 5.90 109.77 0.13 0.23
2 A1 1439 1365 22.43 1.02 0.75 0.85
3 A1 737 699 19.09 5.49 0.25 0.40
4 B1 215i 204i 81.07 0.04 0.75 0.86
5 B2 3401 3226 0.34 53.29 0.75 0.86
6 B2 967 917 2.14 3.98 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4785.0 cm-1
Scaled (by 0.9486) Zero Point Vibrational Energy (zpe) 4539.0 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 MP2=FULL/6-311G**
ABC
9.24600 0.38063 0.36558

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 -1.480
Br2 0.000 0.000 0.367
H3 0.000 0.951 -1.985
H4 0.000 -0.951 -1.985

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84671.07711.0771
Br21.84672.53722.5372
H31.07712.53721.9021
H41.07712.53721.9021

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 117.989 Br2 C1 H4 117.989
H3 C1 H4 124.021
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability