return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP3=FULL/TZVP

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 MP3=FULL/TZVP
Rotational Constants (cm-1) from geometry optimized at MP3=FULL/TZVP
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/TZVP
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP3=FULL/TZVP
 hartrees
Energy at 0K-2611.839282
Energy at 298.15K 
HF Energy-2611.405848
Nuclear repulsion energy80.447990
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 MP3=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 3256 3040 4.99      
2 A1 1446 1350 26.16      
3 A1 709 662 17.80      
4 B1 215i 201i 80.83      
5 B2 3415 3189 0.32      
6 B2 959 896 1.68      

Unscaled Zero Point Vibrational Energy (zpe) 4784.9 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 4467.6 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 MP3=FULL/TZVP
ABC
9.29958 0.37520 0.36065

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/TZVP

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.492
Br2 0.000 0.000 0.370
H3 0.000 0.948 -1.993
H4 0.000 -0.948 -1.993

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86141.07281.0728
Br21.86142.54622.5462
H31.07282.54621.8967
H41.07282.54621.8967

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 117.876 Br2 C1 H4 117.876
H3 C1 H4 124.248
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability