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

using model chemistry: B3PW91/TZVP

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/TZVP
 hartrees
Energy at 0K-2814.190679
Energy at 298.15K 
HF Energy-2814.190679
Nuclear repulsion energy164.967535
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/TZVP
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 3032 2924 24.98 163.66 0.00 0.00
2 A1 1178 1136 0.07 78.70 0.29 0.45
3 A1 592 571 71.59 16.69 0.20 0.33
4 A1 288 278 17.48 21.77 0.27 0.43
5 E 3115 3004 11.49 125.22 0.75 0.86
5 E 3115 3004 11.49 125.22 0.75 0.86
6 E 1449 1397 2.14 10.01 0.75 0.86
6 E 1449 1397 2.14 10.01 0.75 0.86
7 E 616 594 80.71 0.49 0.75 0.86
7 E 616 594 80.71 0.49 0.75 0.86
8 E 102 98 32.64 0.49 0.75 0.86
8 E 102 98 32.64 0.49 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7826.3 cm-1
Scaled (by 0.9643) Zero Point Vibrational Energy (zpe) 7546.9 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/TZVP
ABC
5.38376 0.05389 0.05389

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.206
Mg2 0.000 0.000 -1.126
Br3 0.000 0.000 1.245
H4 0.000 1.018 -3.606
H5 0.881 -0.509 -3.606
H6 -0.881 -0.509 -3.606

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07984.45041.09371.09371.0937
Mg22.07982.37062.68112.68112.6811
Br34.45042.37064.95674.95674.9567
H41.09372.68114.95671.76261.7626
H51.09372.68114.95671.76261.7626
H61.09372.68114.95671.76261.7626

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 111.490
Mg2 C1 H5 111.490 Mg2 C1 H6 111.490
H4 C1 H5 107.379 H4 C1 H6 107.379
H5 C1 H6 107.379
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/TZVP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.958      
2 Mg 1.097      
3 Br -0.602      
4 H 0.155      
5 H 0.155      
6 H 0.155      


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 -2.676 2.676
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.520 0.000 0.000
y 0.000 -34.520 0.000
z 0.000 0.000 -44.949
Traceless
 xyz
x 5.214 0.000 0.000
y 0.000 5.214 0.000
z 0.000 0.000 -10.429
Polar
3z2-r2-20.858
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 5.262 0.000 0.000
y 0.000 5.262 0.000
z 0.000 0.000 11.063


<r2> (average value of r2) Å2
<r2> 196.955
(<r2>)1/2 14.034