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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-2611.082381
Energy at 298.15K 
HF Energy-2610.991787
Nuclear repulsion energy88.563030
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 3139 2977 15.89      
2 A1 1379 1307 27.49      
3 A1 607 576 13.81      
4 E 3253 3085 2.87      
4 E 3253 3085 2.87      
5 E 1528 1449 5.20      
5 E 1528 1449 5.20      
6 E 988 937 5.63      
6 E 988 937 5.63      

Unscaled Zero Point Vibrational Energy (zpe) 8331.6 cm-1
Scaled (by 0.9484) Zero Point Vibrational Energy (zpe) 7901.7 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 B2PLYP=FULL/6-31G*
ABC
5.20673 0.31469 0.31469

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 -1.534
Br2 0.000 0.000 0.423
H3 0.000 1.035 -1.865
H4 0.896 -0.517 -1.865
H5 -0.896 -0.517 -1.865

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95721.08631.08631.0863
Br21.95722.51092.51092.5109
H31.08632.51091.79241.7924
H41.08632.51091.79241.7924
H51.08632.51091.79241.7924

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 107.716 Br2 C1 H4 107.716
Br2 C1 H5 107.716 H3 C1 H4 111.168
H3 C1 H5 111.168 H4 C1 H5 111.168
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability