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

using model chemistry: MP2=FULL/TZVP

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/TZVP
 hartrees
Energy at 0K-2611.835764
Energy at 298.15K-2611.839667
HF Energy-2611.405889
Nuclear repulsion energy80.681057
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/TZVP
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' 3244 3091 6.43      
2 A' 1445 1377 23.37      
3 A' 717 683 22.14      
4 A' 337 321 69.48      
5 A" 3404 3243 0.39      
6 A" 971 925 1.60      

Unscaled Zero Point Vibrational Energy (zpe) 5058.6 cm-1
Scaled (by 0.9527) Zero Point Vibrational Energy (zpe) 4819.4 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 MP2=FULL/TZVP
ABC
9.19752 0.37767 0.36328

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.007 1.488 0.000
Br2 -0.007 -0.368 0.000
H3 0.137 1.978 0.945
H4 0.137 1.978 -0.945

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85621.07411.0741
Br21.85622.53332.5333
H31.07412.53331.8901
H41.07412.53331.8901

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 117.131 Br2 C1 H4 117.131
H3 C1 H4 123.254
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2=FULL/TZVP
 hartrees
Energy at 0K-2611.835699
Energy at 298.15K 
HF Energy-2611.405753
Nuclear repulsion energy80.747964
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/TZVP
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 3254 3100 5.13 115.18 0.12 0.21
2 A1 1446 1377 24.32 0.58 0.75 0.85
3 A1 719 685 20.66 5.80 0.30 0.46
4 B1 243i 232i 85.02 0.08 0.75 0.86
5 B2 3417 3256 0.91 53.37 0.75 0.86
6 B2 965 919 1.90 2.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4778.6 cm-1
Scaled (by 0.9527) Zero Point Vibrational Energy (zpe) 4552.5 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/TZVP
ABC
9.28764 0.37833 0.36353

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.485
Br2 0.000 0.000 0.368
H3 0.000 0.949 -1.986
H4 0.000 -0.949 -1.986

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85341.07311.0731
Br21.85342.53842.5384
H31.07312.53841.8979
H41.07312.53841.8979

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 117.830 Br2 C1 H4 117.830
H3 C1 H4 124.339
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability