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

using model chemistry: mPW1PW91/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/6-31+G**
 hartrees
Energy at 0K-2811.925051
Energy at 298.15K 
HF Energy-2811.925051
Nuclear repulsion energy166.308072
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 mPW1PW91/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 ?a 613 583 79.94 5.15 0.75 0.86
2 ?a 613 583 79.94 5.15 0.75 0.86
3 ?a 612 582 81.05 12.78 0.15 0.27
4 A1 3052 2905 27.10 147.21 0.00 0.00
5 A1 1175 1119 0.04 115.03 0.14 0.24
5 A1 301 287 16.10 22.22 0.17 0.29
6 E 3145 2993 10.39 124.36 0.75 0.86
6 E 3145 2993 10.39 124.36 0.75 0.86
7 E 1462 1392 0.41 1.20 0.75 0.86
7 E 1462 1392 0.41 1.20 0.75 0.86
8 E 158 150 26.62 0.94 0.75 0.86
8 E 158 150 26.62 0.94 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7948.2 cm-1
Scaled (by 0.9518) Zero Point Vibrational Energy (zpe) 7565.1 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 mPW1PW91/6-31+G**
ABC
5.36100 0.05476 0.05476

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.184
Mg2 0.000 0.000 -1.111
Br3 0.000 0.000 1.234
H4 0.000 1.020 -3.583
H5 0.883 -0.510 -3.583
H6 -0.883 -0.510 -3.583

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07324.41831.09511.09511.0951
Mg22.07322.34512.67432.67432.6743
Br34.41832.34514.92414.92414.9241
H41.09512.67434.92411.76641.7664
H51.09512.67434.92411.76641.7664
H61.09512.67434.92411.76641.7664

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 111.369
Mg2 C1 H5 111.369 Mg2 C1 H6 111.369
H4 C1 H5 107.509 H4 C1 H6 107.509
H5 C1 H6 107.509
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.882      
2 Mg 0.777      
3 Br -0.412      
4 H 0.172      
5 H 0.172      
6 H 0.172      


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 -2.194 2.194
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.625 0.000 0.000
y 0.000 -34.625 0.000
z 0.000 0.000 -44.057
Traceless
 xyz
x 4.716 0.000 0.000
y 0.000 4.716 0.000
z 0.000 0.000 -9.432
Polar
3z2-r2-18.864
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 6.524 0.000 0.000
y 0.000 6.524 0.000
z 0.000 0.000 11.661


<r2> (average value of r2) Å2
<r2> 194.180
(<r2>)1/2 13.935