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

using model chemistry: B2PLYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B2PLYP/6-31+G**
 hartrees
Energy at 0K-2811.130350
Energy at 298.15K 
HF Energy-2811.033276
Nuclear repulsion energy165.882699
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 B2PLYP/6-31+G**
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 3061 2915 29.41 153.06 0.00 0.00
2 A1 1189 1132 0.53 128.27 0.15 0.26
3 A1 609 580 77.26 13.00 0.16 0.28
4 A1 300 286 16.39 24.27 0.17 0.29
5 E 3149 2999 12.92 123.89 0.75 0.86
5 E 3149 2999 12.92 123.89 0.75 0.86
6 E 1480 1410 0.22 1.17 0.75 0.86
6 E 1480 1410 0.22 1.17 0.75 0.86
7 E 616 586 75.52 5.38 0.75 0.86
7 E 616 586 75.52 5.38 0.75 0.86
8 E 157 149 26.00 1.13 0.75 0.86
8 E 157 149 26.00 1.13 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7980.8 cm-1
Scaled (by 0.9524) Zero Point Vibrational Energy (zpe) 7600.9 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 B2PLYP/6-31+G**
ABC
5.35874 0.05445 0.05445

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.194
Mg2 0.000 0.000 -1.115
Br3 0.000 0.000 1.237
H4 0.000 1.020 -3.589
H5 0.883 -0.510 -3.589
H6 -0.883 -0.510 -3.589

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07954.43161.09361.09361.0936
Mg22.07952.35212.67592.67592.6759
Br34.43162.35214.93264.93264.9326
H41.09362.67594.93261.76671.7667
H51.09362.67594.93261.76671.7667
H61.09362.67594.93261.76671.7667

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 111.139
Mg2 C1 H5 111.139 Mg2 C1 H6 111.139
H4 C1 H5 107.753 H4 C1 H6 107.753
H5 C1 H6 107.753
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.787      
2 Mg 0.779      
3 Br -0.435      
4 H 0.148      
5 H 0.148      
6 H 0.148      


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 -2.211 2.211
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -35.020 0.000 0.000
y 0.000 -35.020 0.000
z 0.000 0.000 -44.961
Traceless
 xyz
x 4.971 0.000 0.000
y 0.000 4.971 0.000
z 0.000 0.000 -9.942
Polar
3z2-r2-19.883
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 6.488 0.000 0.000
y 0.000 6.488 0.000
z 0.000 0.000 11.860


<r2> (average value of r2) Å2
<r2> 195.390
(<r2>)1/2 13.978