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

using model chemistry: QCISD/daug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD/daug-cc-pVTZ
 hartrees
Energy at 0K-2612.540753
Energy at 298.15K 
HF Energy-2612.093034
Nuclear repulsion energy89.472918
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 QCISD/daug-cc-pVTZ
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 3102 3102 17.74      
2 A1 1358 1358 19.51      
3 A1 639 639 10.15      
4 E 3207 3207 1.81      
4 E 3207 3207 1.81      
5 E 1503 1503 5.00      
5 E 1503 1503 5.00      
6 E 988 988 3.04      
6 E 988 988 3.04      

Unscaled Zero Point Vibrational Energy (zpe) 8248.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8248.0 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 QCISD/daug-cc-pVTZ
ABC
5.24304 0.32187 0.32187

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/daug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.515
Br2 0.000 0.000 0.418
H3 0.000 1.031 -1.849
H4 0.893 -0.516 -1.849
H5 -0.893 -0.516 -1.849

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.93291.08411.08411.0841
Br21.93292.49102.49102.4910
H31.08412.49101.78611.7861
H41.08412.49101.78611.7861
H51.08412.49101.78611.7861

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 107.976 Br2 C1 H4 107.976
Br2 C1 H5 107.976 H3 C1 H4 110.925
H3 C1 H5 110.925 H4 C1 H5 110.925
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability