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

using model chemistry: CCD/6-31G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCD/6-31G**
 hartrees
Energy at 0K-2609.793546
Energy at 298.15K 
HF Energy-2609.505783
Nuclear repulsion energy88.753104
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 CCD/6-31G**
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 3169 2972 16.89      
2 A1 1399 1312 28.65      
3 A1 626 587 10.78      
4 E 3290 3085 4.04      
4 E 3290 3085 4.04      
5 E 1541 1445 3.67      
5 E 1541 1445 3.67      
6 E 1001 939 4.16      
6 E 1001 939 4.16      

Unscaled Zero Point Vibrational Energy (zpe) 8428.8 cm-1
Scaled (by 0.9376) Zero Point Vibrational Energy (zpe) 7902.9 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 CCD/6-31G**
ABC
5.24052 0.31598 0.31598

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.531
Br2 0.000 0.000 0.422
H3 0.000 1.031 -1.862
H4 0.893 -0.516 -1.862
H5 -0.893 -0.516 -1.862

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95291.08341.08341.0834
Br21.95292.50642.50642.5064
H31.08342.50641.78661.7866
H41.08342.50641.78661.7866
H51.08342.50641.78661.7866

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 107.810 Br2 C1 H4 107.810
Br2 C1 H5 107.810 H3 C1 H4 111.080
H3 C1 H5 111.080 H4 C1 H5 111.080
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability