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

using model chemistry: B3PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3PW91/cc-pVTZ
 hartrees
Energy at 0K-2814.256190
Energy at 298.15K 
HF Energy-2814.256190
Nuclear repulsion energy166.059314
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 B3PW91/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3022 2906 19.73      
2 A1 1151 1107 0.47      
3 A1 604 581 80.61      
4 A1 298 287 14.88      
5 E 3103 2984 11.38      
5 E 3103 2984 11.38      
6 E 1444 1388 0.00      
6 E 1444 1388 0.00      
7 E 582 560 72.66      
7 E 582 560 72.66      
8 E 102 98 26.29      
8 E 102 98 26.29      

Unscaled Zero Point Vibrational Energy (zpe) 7768.4 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 7470.1 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 B3PW91/cc-pVTZ
ABC
5.38242 0.05460 0.05460

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.188
Mg2 0.000 0.000 -1.115
Br3 0.000 0.000 1.236
H4 0.000 1.018 -3.586
H5 0.881 -0.509 -3.586
H6 -0.881 -0.509 -3.586

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07284.42371.09311.09311.0931
Mg22.07282.35082.67302.67302.6730
Br34.42372.35084.92874.92874.9287
H41.09312.67304.92871.76291.7629
H51.09312.67304.92871.76291.7629
H61.09312.67304.92871.76291.7629

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 111.396
Mg2 C1 H5 111.396 Mg2 C1 H6 111.396
H4 C1 H5 107.479 H4 C1 H6 107.479
H5 C1 H6 107.479
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.495      
2 Mg 0.576      
3 Br -0.372      
4 H 0.097      
5 H 0.097      
6 H 0.097      


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 -2.189 2.189
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.405 0.000 0.000
y 0.000 -34.405 0.000
z 0.000 0.000 -43.565
Traceless
 xyz
x 4.580 0.000 0.000
y 0.000 4.580 0.000
z 0.000 0.000 -9.160
Polar
3z2-r2-18.320
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 6.959 0.000 0.000
y 0.000 6.959 0.000
z 0.000 0.000 11.570


<r2> (average value of r2) Å2
<r2> 194.443
(<r2>)1/2 13.944