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

using model chemistry: CCSD/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/TZVP
 hartrees
Energy at 0K-2612.440303
Energy at 298.15K 
HF Energy-2612.040172
Nuclear repulsion energy88.793954
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/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 3124 2982 19.77      
2 A1 1385 1322 32.94      
3 A1 621 592 11.37      
4 E 3236 3088 4.51      
4 E 3236 3088 4.51      
5 E 1500 1431 4.15      
5 E 1500 1431 4.15      
6 E 987 942 3.98      
6 E 987 942 3.98      

Unscaled Zero Point Vibrational Energy (zpe) 8287.2 cm-1
Scaled (by 0.9544) Zero Point Vibrational Energy (zpe) 7909.3 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/TZVP
ABC
5.23997 0.31636 0.31636

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.529
Br2 0.000 0.000 0.422
H3 0.000 1.032 -1.863
H4 0.893 -0.516 -1.863
H5 -0.893 -0.516 -1.863

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95091.08441.08441.0844
Br21.95092.50742.50742.5074
H31.08442.50741.78671.7867
H41.08442.50741.78671.7867
H51.08442.50741.78671.7867

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 107.962 Br2 C1 H4 107.962
Br2 C1 H5 107.962 H3 C1 H4 110.937
H3 C1 H5 110.937 H4 C1 H5 110.937
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability