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

using model chemistry: CCSD(T)=FULL/TZVP

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(T)=FULL/TZVP
 hartrees
Energy at 0K-2612.528412
Energy at 298.15K 
HF Energy-2612.040121
Nuclear repulsion energy88.596684
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(T)=FULL/TZVP
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 3103 2966        
2 A1 1374 1313        
3 A1 612 585        
4 E 3217 3076        
4 E 3217 3075        
5 E 1487 1422        
5 E 1487 1422        
6 E 978 935        
6 E 978 935        

Unscaled Zero Point Vibrational Energy (zpe) 8226.4 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 7864.4 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(T)=FULL/TZVP
ABC
5.22786 0.31485 0.31485

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

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 1.033 -1.867
H4 0.894 -0.516 -1.867
H5 -0.894 -0.516 -1.867

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95601.08531.08531.0853
Br21.95602.51182.51182.5118
H31.08532.51181.78871.7887
H41.08532.51181.78871.7887
H51.08532.51181.78871.7887

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 107.905 Br2 C1 H4 107.905
Br2 C1 H5 107.905 H3 C1 H4 110.991
H3 C1 H5 110.991 H4 C1 H5 110.991
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability