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

using model chemistry: MP3=FULL/cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-2612.312471
Energy at 298.15K 
HF Energy-2612.000349
Nuclear repulsion energy88.873193
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-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 3137 2950 17.53      
2 A1 1353 1272 23.97      
3 A1 640 602 9.06      
4 E 3255 3061 3.03      
4 E 3255 3061 3.03      
5 E 1485 1396 4.92      
5 E 1485 1396 4.92      
6 E 977 919 4.90      
6 E 977 919 4.90      

Unscaled Zero Point Vibrational Energy (zpe) 8282.1 cm-1
Scaled (by 0.9403) Zero Point Vibrational Energy (zpe) 7787.7 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-pVDZ
ABC
5.14189 0.31791 0.31791

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.522
Br2 0.000 0.000 0.421
H3 0.000 1.041 -1.866
H4 0.902 -0.521 -1.866
H5 -0.902 -0.521 -1.866

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.94311.09651.09651.0965
Br21.94312.51242.51242.5124
H31.09652.51241.80361.8036
H41.09652.51241.80361.8036
H51.09652.51241.80361.8036

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 108.247 Br2 C1 H4 108.247
Br2 C1 H5 108.247 H3 C1 H4 110.667
H3 C1 H5 110.667 H4 C1 H5 110.667
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability