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

using model chemistry: B1B95/6-31G(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 B1B95/6-31G(2df,p)
 hartrees
Energy at 0K-2812.239355
Energy at 298.15K 
HF Energy-2812.239355
Nuclear repulsion energy167.432114
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 B1B95/6-31G(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 3051 2922 12.65 107.69 0.00 0.00
2 A1 1157 1108 2.44 51.67 0.12 0.21
3 A1 619 593 73.59 10.17 0.09 0.17
4 A1 309 296 12.22 20.19 0.15 0.26
5 E 3141 3008 10.38 112.48 0.75 0.86
5 E 3141 3008 10.38 112.47 0.75 0.86
6 E 1452 1390 0.31 3.04 0.75 0.86
6 E 1452 1390 0.31 3.04 0.75 0.86
7 E 577 553 84.05 2.01 0.75 0.86
7 E 577 553 84.05 2.01 0.75 0.86
8 E 117 112 22.66 0.78 0.75 0.86
8 E 117 112 22.66 0.78 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7854.9 cm-1
Scaled (by 0.9577) Zero Point Vibrational Energy (zpe) 7522.7 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 B1B95/6-31G(2df,p)
ABC
5.39898 0.05549 0.05549

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.164
Mg2 0.000 0.000 -1.100
Br3 0.000 0.000 1.225
H4 0.000 1.016 -3.567
H5 0.880 -0.508 -3.567
H6 -0.880 -0.508 -3.567

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06394.38981.09301.09301.0930
Mg22.06392.32592.66742.66742.6674
Br34.38982.32594.89884.89884.8988
H41.09302.66744.89881.76021.7602
H51.09302.66744.89881.76021.7602
H61.09302.66744.89881.76021.7602

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 111.600
Mg2 C1 H5 111.600 Mg2 C1 H6 111.600
H4 C1 H5 107.261 H4 C1 H6 107.261
H5 C1 H6 107.261
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.635      
2 Mg 0.367      
3 Br -0.152      
4 H 0.140      
5 H 0.140      
6 H 0.140      


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 -2.109 2.109
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.085 0.000 0.000
y 0.000 -34.085 0.000
z 0.000 0.000 -41.556
Traceless
 xyz
x 3.736 0.000 0.000
y 0.000 3.736 0.000
z 0.000 0.000 -7.471
Polar
3z2-r2-14.942
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 7.024 0.000 0.000
y 0.000 7.024 0.000
z 0.000 0.000 10.661


<r2> (average value of r2) Å2
<r2> 191.280
(<r2>)1/2 13.830