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

using model chemistry: CCSD/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 CCSD/6-31G**
 hartrees
Energy at 0K-2609.795218
Energy at 298.15K 
HF Energy-2609.505755
Nuclear repulsion energy88.626451
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 CCSD/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 3162 2949 17.55      
2 A1 1392 1298 30.34      
3 A1 617 576 11.72      
4 E 3282 3060 4.18      
4 E 3282 3060 4.18      
5 E 1537 1434 3.62      
5 E 1537 1434 3.62      
6 E 997 930 4.12      
6 E 997 930 4.12      

Unscaled Zero Point Vibrational Energy (zpe) 8401.8 cm-1
Scaled (by 0.9326) Zero Point Vibrational Energy (zpe) 7835.5 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 CCSD/6-31G**
ABC
5.23528 0.31498 0.31498

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/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 1.032 -1.864
H4 0.894 -0.516 -1.864
H5 -0.894 -0.516 -1.864

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95631.08371.08371.0837
Br21.95632.50912.50912.5091
H31.08372.50911.78751.7875
H41.08372.50911.78751.7875
H51.08372.50911.78751.7875

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 107.771 Br2 C1 H4 107.771
Br2 C1 H5 107.771 H3 C1 H4 111.116
H3 C1 H5 111.116 H4 C1 H5 111.116
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability