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All results from a given calculation for CH3MgBr (Methyl Magnesium Bromide)

using model chemistry: PBEPBEultrafine/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBEultrafine/6-31G*
 hartrees
Energy at 0K-2811.162988
Energy at 298.15K 
HF Energy-2811.162988
Nuclear repulsion energy165.819582
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 PBEPBEultrafine/6-31G*
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 2980 2931 12.53 114.75 0.00 0.00
2 A1 1157 1138 4.83 59.71 0.05 0.10
3 A1 597 587 61.51 10.82 0.06 0.12
4 A1 299 294 12.66 23.66 0.17 0.29
5 E 3066 3016 9.73 121.48 0.75 0.86
5 E 3066 3016 9.73 121.49 0.75 0.86
6 E 1447 1423 0.01 3.92 0.75 0.86
6 E 1447 1423 0.01 3.92 0.75 0.86
7 E 609 599 83.91 2.33 0.75 0.86
7 E 609 599 83.91 2.34 0.75 0.86
8 E 121 119 19.04 0.57 0.75 0.86
8 E 121 119 19.04 0.57 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7760.3 cm-1
Scaled (by 0.9835) Zero Point Vibrational Energy (zpe) 7632.2 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 PBEPBEultrafine/6-31G*
ABC
5.27370 0.05442 0.05442

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.197
Mg2 0.000 0.000 -1.111
Br3 0.000 0.000 1.237
H4 0.000 1.028 -3.599
H5 0.890 -0.514 -3.599
H6 -0.890 -0.514 -3.599

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08584.43381.10411.10411.1041
Mg22.08582.34802.69202.69202.6920
Br34.43382.34804.94414.94414.9441
H41.10412.69204.94411.78091.7809
H51.10412.69204.94411.78091.7809
H61.10412.69204.94411.78091.7809

picture of Methyl Magnesium Bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 Mg2 Br3 180.000 Mg2 C1 H4 111.362
Mg2 C1 H5 111.362 Mg2 C1 H6 111.362
H4 C1 H5 107.516 H4 C1 H6 107.516
H5 C1 H6 107.517
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.796      
2 Mg 0.521      
3 Br -0.263      
4 H 0.179      
5 H 0.179      
6 H 0.179      


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 -2.156 2.156
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.408 0.000 0.000
y 0.000 -34.408 0.000
z 0.000 0.000 -40.889
Traceless
 xyz
x 3.241 0.000 0.000
y 0.000 3.241 0.000
z 0.000 0.000 -6.482
Polar
3z2-r2-12.964
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 6.467 0.000 0.000
y 0.000 6.467 0.000
z 0.000 0.000 11.289


<r2> (average value of r2) Å2
<r2> 194.555
(<r2>)1/2 13.948