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

using model chemistry: CCSD=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 CCSD=FULL/6-31G*
 hartrees
Energy at 0K-2609.800812
Energy at 298.15K 
HF Energy-2609.500314
Nuclear repulsion energy88.570103
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=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 3129 2972 15.95      
2 A1 1390 1320 23.21      
3 A1 618 587 11.83      
4 E 3241 3078 3.27      
4 E 3241 3078 3.27      
5 E 1529 1452 5.26      
5 E 1529 1452 5.26      
6 E 995 945 5.29      
6 E 995 945 5.29      

Unscaled Zero Point Vibrational Energy (zpe) 8333.4 cm-1
Scaled (by 0.9498) Zero Point Vibrational Energy (zpe) 7915.1 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 CCSD=FULL/6-31G*
ABC
5.18701 0.31495 0.31495

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.533
Br2 0.000 0.000 0.423
H3 0.000 1.037 -1.866
H4 0.898 -0.518 -1.866
H5 -0.898 -0.518 -1.866

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95551.08911.08911.0891
Br21.95552.51282.51282.5128
H31.08912.51281.79581.7958
H41.08912.51281.79581.7958
H51.08912.51281.79581.7958

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 107.825 Br2 C1 H4 107.825
Br2 C1 H5 107.825 H3 C1 H4 111.066
H3 C1 H5 111.066 H4 C1 H5 111.066
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability