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

using model chemistry: CID/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CID/cc-pVDZ
 hartrees
Energy at 0K-2612.279371
Energy at 298.15K 
HF Energy-2612.000435
Nuclear repulsion energy89.015531
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 CID/cc-pVDZ
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 3160 2920 19.25      
2 A1 1373 1269 27.00      
3 A1 646 597 11.43      
4 E 3278 3029 3.03      
4 E 3278 3029 3.03      
5 E 1503 1389 4.99      
5 E 1503 1389 4.99      
6 E 992 917 4.82      
6 E 992 917 4.82      

Unscaled Zero Point Vibrational Energy (zpe) 8362.7 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 7727.2 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 CID/cc-pVDZ
ABC
5.15869 0.31892 0.31892

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.520
Br2 0.000 0.000 0.420
H3 0.000 1.040 -1.862
H4 0.900 -0.520 -1.862
H5 -0.900 -0.520 -1.862

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.94021.09451.09451.0945
Br21.94022.50802.50802.5080
H31.09452.50801.80071.8007
H41.09452.50801.80071.8007
H51.09452.50801.80071.8007

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 108.215 Br2 C1 H4 108.215
Br2 C1 H5 108.215 H3 C1 H4 110.697
H3 C1 H5 110.697 H4 C1 H5 110.697
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability