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

using model chemistry: CID/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 CID/6-31G*
 hartrees
Energy at 0K-2609.747712
Energy at 298.15K 
HF Energy-2609.500507
Nuclear repulsion energy88.793542
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 CID/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 3181 2939 15.70      
2 A1 1414 1306 24.77      
3 A1 631 583 13.41      
4 E 3296 3044 2.75      
4 E 3296 3044 2.75      
5 E 1552 1434 5.47      
5 E 1552 1434 5.47      
6 E 1013 935 5.34      
6 E 1013 935 5.34      

Unscaled Zero Point Vibrational Energy (zpe) 8473.6 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 7827.1 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 CID/6-31G*
ABC
5.22344 0.31645 0.31645

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.529
Br2 0.000 0.000 0.422
H3 0.000 1.033 -1.861
H4 0.895 -0.517 -1.861
H5 -0.895 -0.517 -1.861

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95101.08521.08521.0852
Br21.95102.50612.50612.5061
H31.08522.50611.78951.7895
H41.08522.50611.78951.7895
H51.08522.50611.78951.7895

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 107.822 Br2 C1 H4 107.822
Br2 C1 H5 107.822 H3 C1 H4 111.069
H3 C1 H5 111.069 H4 C1 H5 111.069
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability