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

using model chemistry: CCD/aug-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 CCD/aug-cc-pVDZ
 hartrees
Energy at 0K-2612.327866
Energy at 298.15K 
HF Energy-2612.005154
Nuclear repulsion energy88.626159
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/aug-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 3095 2985 18.77      
2 A1 1339 1292 21.60      
3 A1 630 608 10.03      
4 E 3209 3095 2.74      
4 E 3209 3095 2.74      
5 E 1467 1415 4.19      
5 E 1467 1415 4.19      
6 E 973 939 3.23      
6 E 973 939 3.23      

Unscaled Zero Point Vibrational Energy (zpe) 8181.4 cm-1
Scaled (by 0.9645) Zero Point Vibrational Energy (zpe) 7891.0 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/aug-cc-pVDZ
ABC
5.11953 0.31602 0.31602

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.528
Br2 0.000 0.000 0.422
H3 0.000 1.044 -1.867
H4 0.904 -0.522 -1.867
H5 -0.904 -0.522 -1.867

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95041.09711.09711.0971
Br21.95042.51552.51552.5155
H31.09712.51551.80761.8076
H41.09712.51551.80761.8076
H51.09712.51551.80761.8076

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 107.971 Br2 C1 H4 107.971
Br2 C1 H5 107.971 H3 C1 H4 110.929
H3 C1 H5 110.929 H4 C1 H5 110.929
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability