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

using model chemistry: CID/6-311G*

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/6-311G*
 hartrees
Energy at 0K-2612.255672
Energy at 298.15K 
HF Energy-2611.989747
Nuclear repulsion energy89.154335
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/6-311G*
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 3150 2927 20.43      
2 A1 1417 1316 22.84      
3 A1 644 599 11.50      
4 E 3259 3028 4.58      
4 E 3259 3028 4.58      
5 E 1534 1425 7.07      
5 E 1534 1425 7.07      
6 E 1016 944 7.47      
6 E 1016 944 7.47      

Unscaled Zero Point Vibrational Energy (zpe) 8414.2 cm-1
Scaled (by 0.9291) Zero Point Vibrational Energy (zpe) 7817.7 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 CID/6-311G*
ABC
5.25806 0.31923 0.31923

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.520
Br2 0.000 0.000 0.420
H3 0.000 1.030 -1.860
H4 0.892 -0.515 -1.860
H5 -0.892 -0.515 -1.860

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.94031.08451.08451.0845
Br21.94032.50212.50212.5021
H31.08452.50211.78361.7836
H41.08452.50211.78361.7836
H51.08452.50211.78361.7836

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 108.280 Br2 C1 H4 108.280
Br2 C1 H5 108.280 H3 C1 H4 110.636
H3 C1 H5 110.636 H4 C1 H5 110.636
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability