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

using model chemistry: B3LYP/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3LYP/6-311+G(3df,2p)
 hartrees
Energy at 0K-2614.080128
Energy at 298.15K 
HF Energy-2614.080128
Nuclear repulsion energy88.565830
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 B3LYP/6-311+G(3df,2p)
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 3079 2978 15.50 131.73 0.00 0.00
2 A1 1332 1288 18.13 1.78 0.17 0.28
3 A1 597 577 12.20 24.02 0.18 0.30
4 E 3183 3078 1.37 51.94 0.75 0.86
4 E 3183 3078 1.37 51.94 0.75 0.86
5 E 1479 1430 5.95 3.58 0.75 0.86
5 E 1479 1430 5.95 3.58 0.75 0.86
6 E 964 932 3.79 0.48 0.75 0.86
6 E 964 932 3.79 0.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8130.1 cm-1
Scaled (by 0.967) Zero Point Vibrational Energy (zpe) 7861.8 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 B3LYP/6-311+G(3df,2p)
ABC
5.23302 0.31447 0.31447

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.535
Br2 0.000 0.000 0.423
H3 0.000 1.032 -1.864
H4 0.894 -0.516 -1.864
H5 -0.894 -0.516 -1.864

Atom - Atom Distances (Å)
  C1 Br2 H3 H4 H5
C11.95851.08331.08331.0833
Br21.95852.50932.50932.5093
H31.08332.50931.78781.7878
H41.08332.50931.78781.7878
H51.08332.50931.78781.7878

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 107.660 Br2 C1 H4 107.660
Br2 C1 H5 107.660 H3 C1 H4 111.220
H3 C1 H5 111.220 H4 C1 H5 111.220
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.437      
2 Br -0.111      
3 H 0.183      
4 H 0.183      
5 H 0.183      


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 -1.939 1.939
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.059 0.000 0.000
y 0.000 -26.059 0.000
z 0.000 0.000 -22.325
Traceless
 xyz
x -1.867 0.000 0.000
y 0.000 -1.867 0.000
z 0.000 0.000 3.734
Polar
3z2-r27.468
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 4.658 0.000 0.000
y 0.000 4.658 0.000
z 0.000 0.000 6.671


<r2> (average value of r2) Å2
<r2> 49.529
(<r2>)1/2 7.038