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

using model chemistry: B3LYP/6-31G(2df,p)

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/6-31G(2df,p)
 hartrees
Energy at 0K-2811.954197
Energy at 298.15K 
HF Energy-2811.954197
Nuclear repulsion energy166.831267
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/6-31G(2df,p)
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 3022 2917 15.01 109.18 0.00 0.00
2 A1 1163 1122 5.97 51.93 0.13 0.23
3 A1 608 586 67.77 9.98 0.09 0.17
4 A1 305 294 11.78 22.17 0.16 0.27
5 E 3099 2991 12.21 115.91 0.75 0.86
5 E 3099 2991 12.21 115.91 0.75 0.86
6 E 1455 1404 0.46 3.17 0.75 0.86
6 E 1455 1404 0.46 3.17 0.75 0.86
7 E 584 564 81.82 1.91 0.75 0.86
7 E 584 564 81.83 1.91 0.75 0.86
8 E 116 112 20.69 0.83 0.75 0.86
8 E 116 112 20.69 0.83 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7803.4 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 7530.3 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/6-31G(2df,p)
ABC
5.36636 0.05508 0.05508

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.177
Mg2 0.000 0.000 -1.104
Br3 0.000 0.000 1.230
H4 0.000 1.019 -3.578
H5 0.883 -0.510 -3.578
H6 -0.883 -0.510 -3.578

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07254.40681.09561.09561.0956
Mg22.07252.33432.67582.67582.6758
Br34.40682.33434.91524.91524.9152
H41.09562.67584.91521.76551.7655
H51.09562.67584.91521.76551.7655
H61.09562.67584.91521.76551.7655

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 111.505
Mg2 C1 H5 111.506 Mg2 C1 H6 111.506
H4 C1 H5 107.363 H4 C1 H6 107.363
H5 C1 H6 107.363
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.580      
2 Mg 0.305      
3 Br -0.111      
4 H 0.129      
5 H 0.129      
6 H 0.129      


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 -2.144 2.144
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.359 0.000 0.000
y 0.000 -34.359 0.000
z 0.000 0.000 -41.444
Traceless
 xyz
x 3.543 0.000 0.000
y 0.000 3.543 0.000
z 0.000 0.000 -7.086
Polar
3z2-r2-14.171
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 7.089 0.000 0.000
y 0.000 7.090 0.000
z 0.000 0.000 10.981


<r2> (average value of r2) Å2
<r2> 192.603
(<r2>)1/2 13.878