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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-2811.701500
Energy at 298.15K 
HF Energy-2811.701500
Nuclear repulsion energy166.501516
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 B3PW91/6-31G*
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 3044 2912 16.68      
2 A1 1203 1151 1.57      
3 A1 611 585 68.93      
4 A1 305 292 13.61      
5 E 3129 2993 12.21      
5 E 3129 2993 12.21      
6 E 1489 1425 0.00      
6 E 1489 1425 0.00      
7 E 617 590 88.24      
7 E 617 590 88.24      
8 E 126 120 24.08      
8 E 126 120 24.08      

Unscaled Zero Point Vibrational Energy (zpe) 7942.1 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 7598.2 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 B3PW91/6-31G*
ABC
5.35673 0.05486 0.05486

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.183
Mg2 0.000 0.000 -1.107
Br3 0.000 0.000 1.232
H4 0.000 1.020 -3.587
H5 0.884 -0.510 -3.587
H6 -0.884 -0.510 -3.587

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07654.41551.09721.09721.0972
Mg22.07652.33902.68182.68182.6818
Br34.41552.33904.92594.92594.9259
H41.09722.68184.92591.76711.7671
H51.09722.68184.92591.76711.7671
H61.09722.68184.92591.76711.7671

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 111.584
Mg2 C1 H5 111.584 Mg2 C1 H6 111.584
H4 C1 H5 107.278 H4 C1 H6 107.278
H5 C1 H6 107.278
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.828      
2 Mg 0.575      
3 Br -0.294      
4 H 0.182      
5 H 0.182      
6 H 0.182      


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 -2.131 2.131
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.060 0.000 0.000
y 0.000 -34.060 0.000
z 0.000 0.000 -41.931
Traceless
 xyz
x 3.936 0.000 0.000
y 0.000 3.936 0.000
z 0.000 0.000 -7.871
Polar
3z2-r2-15.742
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 6.157 0.000 0.000
y 0.000 6.157 0.000
z 0.000 0.000 10.441


<r2> (average value of r2) Å2
<r2> 193.274
(<r2>)1/2 13.902