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

using model chemistry: QCISD(T)=FULL/aug-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(T)=FULL/aug-cc-pVTZ
 hartrees
Energy at 0K-2612.621604
Energy at 298.15K 
HF Energy-2612.092975
Nuclear repulsion energy89.605680
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(T)=FULL/aug-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 3109 3109        
2 A1 1355 1355        
3 A1 637 637        
4 E 3193 3193        
4 E 3193 3193        
5 E 1502 1502        
5 E 1502 1502        
6 E 981 981        
6 E 981 981        

Unscaled Zero Point Vibrational Energy (zpe) 8226.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8226.1 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 QCISD(T)=FULL/aug-cc-pVTZ
ABC
5.24966 0.32287 0.32287

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.513
Br2 0.000 0.000 0.417
H3 0.000 1.031 -1.845
H4 0.893 -0.515 -1.845
H5 -0.893 -0.515 -1.845

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.93041.08271.08271.0827
Br21.93042.48592.48592.4859
H31.08272.48591.78501.7850
H41.08272.48591.78501.7850
H51.08272.48591.78501.7850

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 107.847 Br2 C1 H4 107.847
Br2 C1 H5 107.847 H3 C1 H4 111.046
H3 C1 H5 111.046 H4 C1 H5 111.046
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability