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

using model chemistry: MP3=FULL/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=FULL/cc-pVTZ
 hartrees
Energy at 0K-2612.578557
Energy at 298.15K 
HF Energy-2612.092359
Nuclear repulsion energy89.752768
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/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 3153 2940 15.43      
2 A1 1368 1276 18.42      
3 A1 649 606 8.39      
4 E 3241 3023 1.82      
4 E 3241 3023 1.82      
5 E 1511 1409 5.35      
5 E 1511 1409 5.35      
6 E 983 916 4.28      
6 E 983 916 4.28      

Unscaled Zero Point Vibrational Energy (zpe) 8319.6 cm-1
Scaled (by 0.9326) Zero Point Vibrational Energy (zpe) 7758.9 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=FULL/cc-pVTZ
ABC
5.31188 0.32363 0.32363

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.510
Br2 0.000 0.000 0.417
H3 0.000 1.025 -1.846
H4 0.887 -0.512 -1.846
H5 -0.887 -0.512 -1.846

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.92741.07811.07811.0781
Br21.92742.48422.48422.4842
H31.07812.48421.77451.7745
H41.07812.48421.77451.7745
H51.07812.48421.77451.7745

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 108.144 Br2 C1 H4 108.144
Br2 C1 H5 108.144 H3 C1 H4 110.765
H3 C1 H5 110.765 H4 C1 H5 110.765
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability