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

using model chemistry: B2PLYP=FULL/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 B2PLYP=FULL/6-31G**
 hartrees
Energy at 0K-2611.093005
Energy at 298.15K 
HF Energy-2610.996608
Nuclear repulsion energy88.669873
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 B2PLYP=FULL/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 3136 3136 16.12 104.95 0.00 0.01
2 A1 1369 1369 28.11 0.88 0.65 0.79
3 A1 611 611 13.31 18.58 0.27 0.42
4 E 3255 3255 2.89 57.14 0.75 0.86
4 E 3255 3255 2.89 57.14 0.75 0.86
5 E 1516 1516 4.75 13.49 0.75 0.86
5 E 1516 1516 4.75 13.49 0.75 0.86
6 E 984 984 5.24 5.78 0.75 0.86
6 E 984 984 5.24 5.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8314.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8314.1 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 B2PLYP=FULL/6-31G**
ABC
5.22693 0.31540 0.31540

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.532
Br2 0.000 0.000 0.422
H3 0.000 1.033 -1.863
H4 0.894 -0.516 -1.863
H5 -0.894 -0.516 -1.863

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95491.08451.08451.0845
Br21.95492.50812.50812.5081
H31.08452.50811.78891.7889
H41.08452.50811.78891.7889
H51.08452.50811.78891.7889

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 107.756 Br2 C1 H4 107.756
Br2 C1 H5 107.756 H3 C1 H4 111.131
H3 C1 H5 111.131 H4 C1 H5 111.131
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability