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

using model chemistry: TPSSh/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at TPSSh/6-311G**
 hartrees
Energy at 0K-2613.959220
Energy at 298.15K 
HF Energy-2613.959220
Nuclear repulsion energy88.621850
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 TPSSh/6-311G**
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 3081 3081 19.04 130.21 0.00 0.00
2 A1 1341 1341 28.03 0.45 0.58 0.73
3 A1 600 600 13.71 19.61 0.28 0.44
4 E 3191 3191 5.05 60.75 0.75 0.86
4 E 3191 3191 5.05 60.75 0.75 0.86
5 E 1489 1489 6.12 10.10 0.75 0.86
5 E 1489 1489 6.12 10.10 0.75 0.86
6 E 967 967 6.23 4.83 0.75 0.86
6 E 967 967 6.23 4.83 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8157.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8157.3 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 TPSSh/6-311G**
ABC
5.19560 0.31522 0.31522

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.534
Br2 0.000 0.000 0.422
H3 0.000 1.036 -1.861
H4 0.897 -0.518 -1.861
H5 -0.897 -0.518 -1.861

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95601.08661.08661.0866
Br21.95602.50782.50782.5078
H31.08662.50781.79431.7943
H41.08662.50781.79431.7943
H51.08662.50781.79431.7943

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 107.563 Br2 C1 H4 107.563
Br2 C1 H5 107.563 H3 C1 H4 111.310
H3 C1 H5 111.310 H4 C1 H5 111.310
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-311G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.387      
2 Br -0.107      
3 H 0.165      
4 H 0.165      
5 H 0.165      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -2.003 2.003
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.005 0.000 0.000
y 0.000 3.005 0.000
z 0.000 0.000 5.609


<r2> (average value of r2) Å2
<r2> 49.278
(<r2>)1/2 7.020