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All results from a given calculation for CH3Br (methyl bromide)

using model chemistry: MP3/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP3/daug-cc-pVTZ
 hartrees
Energy at 0K-2612.538260
Energy at 298.15K 
HF Energy-2612.093078
Nuclear repulsion energy89.586971
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/daug-cc-pVTZ
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 3129 3129 15.24      
2 A1 1361 1361 17.09      
3 A1 647 647 9.18      
4 E 3236 3236 1.19      
4 E 3236 3236 1.19      
5 E 1507 1507 5.37      
5 E 1507 1507 5.37      
6 E 990 990 3.24      
6 E 990 990 3.24      

Unscaled Zero Point Vibrational Energy (zpe) 8300.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8300.9 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 MP3/daug-cc-pVTZ
ABC
5.25918 0.32266 0.32266

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/daug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.513
Br2 0.000 0.000 0.418
H3 0.000 1.030 -1.847
H4 0.892 -0.515 -1.847
H5 -0.892 -0.515 -1.847

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.93071.08231.08231.0823
Br21.93072.48732.48732.4873
H31.08232.48731.78341.7834
H41.08232.48731.78341.7834
H51.08232.48731.78341.7834

picture of methyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 107.947 Br2 C1 H4 107.947
Br2 C1 H5 107.947 H3 C1 H4 110.952
H3 C1 H5 110.952 H4 C1 H5 110.952
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability