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

using model chemistry: MP2/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/SDD
 hartrees
Energy at 0K-52.847373
Energy at 298.15K 
HF Energy-52.728728
Nuclear repulsion energy24.892126
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/SDD
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 3080 2973 35.25      
2 A1 1397 1348 24.93      
3 A1 580 560 8.43      
4 E 3222 3111 14.22      
4 E 3222 3111 14.22      
5 E 1503 1450 5.94      
5 E 1503 1450 5.94      
6 E 986 952 11.36      
6 E 986 952 11.36      

Unscaled Zero Point Vibrational Energy (zpe) 8239.2 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 7953.3 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/SDD
ABC
5.10717 0.29667 0.29667

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.583
Br2 0.000 0.000 0.436
H3 0.000 1.045 -1.916
H4 0.905 -0.522 -1.916
H5 -0.905 -0.522 -1.916

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C12.01891.09651.09651.0965
Br22.01892.57302.57302.5730
H31.09652.57301.80971.8097
H41.09652.57301.80971.8097
H51.09652.57301.80971.8097

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 107.652 Br2 C1 H4 107.652
Br2 C1 H5 107.652 H3 C1 H4 111.228
H3 C1 H5 111.228 H4 C1 H5 111.228
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability