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

using model chemistry: MP2=FULL/cc-pVDZ

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/cc-pVDZ
 hartrees
Energy at 0K-2611.626283
Energy at 298.15K-2611.630227
HF Energy-2611.367921
Nuclear repulsion energy80.556396
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/cc-pVDZ
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' 3230 3070 6.65      
2 A' 1411 1341 20.85      
3 A' 734 697 21.02      
4 A' 375 356 57.96      
5 A" 3388 3220 0.45      
6 A" 949 902 1.08      

Unscaled Zero Point Vibrational Energy (zpe) 5042.7 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 4792.6 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/cc-pVDZ
ABC
8.96528 0.37731 0.36276

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.008 1.487 0.000
Br2 -0.008 -0.368 0.000
H3 0.159 1.984 0.954
H4 0.159 1.984 -0.954

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85551.08911.0891
Br21.85552.54452.5445
H31.08912.54451.9090
H41.08912.54451.9090

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 117.167 Br2 C1 H4 117.167
H3 C1 H4 122.431
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-2611.626174
Energy at 298.15K 
HF Energy-2611.367681
Nuclear repulsion energy80.648804
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/cc-pVDZ
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 3243 3082 4.60 119.48 0.12 0.21
2 A1 1411 1341 22.09 1.70 0.70 0.83
3 A1 738 701 19.25 5.83 0.24 0.38
4 B1 273i 260i 70.44 0.30 0.75 0.86
5 B2 3405 3236 1.30 58.31 0.75 0.86
6 B2 940 893 1.22 4.02 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 4731.6 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 4496.9 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/cc-pVDZ
ABC
9.08116 0.37823 0.36310

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.483
Br2 0.000 0.000 0.368
H3 0.000 0.960 -1.995
H4 0.000 -0.960 -1.995

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85171.08771.0877
Br21.85172.55102.5510
H31.08772.55101.9193
H41.08772.55101.9193

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 118.080 Br2 C1 H4 118.080
H3 C1 H4 123.841
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability