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

using model chemistry: HSEh1PBE/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HSEh1PBE/Def2TZVPP
 hartrees
Energy at 0K-2613.716138
Energy at 298.15K 
HF Energy-2613.716138
Nuclear repulsion energy89.400997
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 HSEh1PBE/Def2TZVPP
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 3095 3095 15.32 140.80 0.00 0.00
2 A1 1331 1331 15.62 0.09 0.22 0.36
3 A1 632 632 10.43 18.72 0.24 0.39
4 E 3206 3206 1.54 55.01 0.75 0.86
4 E 3206 3206 1.54 55.01 0.75 0.86
5 E 1471 1471 6.35 6.33 0.75 0.86
5 E 1471 1471 6.35 6.33 0.75 0.86
6 E 967 967 4.90 1.99 0.75 0.86
6 E 967 967 4.91 1.99 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8173.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8173.2 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 HSEh1PBE/Def2TZVPP
ABC
5.23563 0.32135 0.32135

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/Def2TZVPP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.516
Br2 0.000 0.000 0.419
H3 0.000 1.032 -1.851
H4 0.894 -0.516 -1.851
H5 -0.894 -0.516 -1.851

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.93441.08501.08501.0850
Br21.93442.49322.49322.4932
H31.08502.49321.78741.7874
H41.08502.49321.78741.7874
H51.08502.49321.78741.7874

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 107.993 Br2 C1 H4 107.993
Br2 C1 H5 107.993 H3 C1 H4 110.908
H3 C1 H5 110.908 H4 C1 H5 110.908
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.290      
2 Br -0.131      
3 H 0.141      
4 H 0.141      
5 H 0.141      


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 -1.913 1.913
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.797 0.000 0.000
y 0.000 -25.797 0.000
z 0.000 0.000 -22.163
Traceless
 xyz
x -1.817 0.000 0.000
y 0.000 -1.817 0.000
z 0.000 0.000 3.634
Polar
3z2-r27.268
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.054 0.000 0.000
y 0.000 4.054 0.000
z 0.000 0.000 6.201


<r2> (average value of r2) Å2
<r2> 48.748
(<r2>)1/2 6.982