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

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

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/6-31+G**
 hartrees
Energy at 0K-2609.808723
Energy at 298.15K 
HF Energy-2609.519659
Nuclear repulsion energy88.759743
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/6-31+G**
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 3162 2979 18.63      
2 A1 1403 1322 30.87      
3 A1 624 588 10.87      
4 E 3281 3092 2.94      
4 E 3281 3092 2.94      
5 E 1526 1438 4.42      
5 E 1526 1438 4.42      
6 E 1006 948 3.89      
6 E 1006 948 3.89      

Unscaled Zero Point Vibrational Energy (zpe) 8407.8 cm-1
Scaled (by 0.9423) Zero Point Vibrational Energy (zpe) 7922.7 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 CCD/6-31+G**
ABC
5.24108 0.31605 0.31605

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.530
Br2 0.000 0.000 0.422
H3 0.000 1.031 -1.863
H4 0.893 -0.516 -1.863
H5 -0.893 -0.516 -1.863

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95221.08391.08391.0839
Br21.95222.50742.50742.5074
H31.08392.50741.78651.7865
H41.08392.50741.78651.7865
H51.08392.50741.78651.7865

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 107.906 Br2 C1 H4 107.906
Br2 C1 H5 107.906 H3 C1 H4 110.990
H3 C1 H5 110.990 H4 C1 H5 110.990
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability