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

using model chemistry: B3PW91/6-311+G(3df,2p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B3PW91/6-311+G(3df,2p)
 hartrees
Energy at 0K-2814.171469
Energy at 298.15K 
HF Energy-2814.171469
Nuclear repulsion energy166.158460
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 B3PW91/6-311+G(3df,2p)
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 3020 2891 21.58 169.20 0.00 0.00
2 A1 1149 1100 0.13 103.04 0.19 0.32
3 A1 604 579 82.27 13.37 0.16 0.28
4 A1 298 285 14.87 24.35 0.14 0.25
5 E 3100 2968 11.41 109.45 0.75 0.86
5 E 3100 2968 11.41 109.45 0.75 0.86
6 E 1444 1382 0.00 0.19 0.75 0.86
6 E 1444 1382 0.00 0.19 0.75 0.86
7 E 579 554 70.17 7.64 0.75 0.86
7 E 579 554 70.17 7.64 0.75 0.86
8 E 101 97 26.76 1.41 0.75 0.86
8 E 101 97 26.76 1.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7760.0 cm-1
Scaled (by 0.9573) Zero Point Vibrational Energy (zpe) 7428.7 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 B3PW91/6-311+G(3df,2p)
ABC
5.38349 0.05467 0.05467

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-311+G(3df,2p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.185
Mg2 0.000 0.000 -1.114
Br3 0.000 0.000 1.235
H4 0.000 1.018 -3.584
H5 0.881 -0.509 -3.584
H6 -0.881 -0.509 -3.584

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07134.42071.09301.09301.0930
Mg22.07132.34942.67152.67152.6715
Br34.42072.34944.92584.92584.9258
H41.09302.67154.92581.76271.7627
H51.09302.67154.92581.76271.7627
H61.09302.67154.92581.76271.7627

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 111.397
Mg2 C1 H5 111.397 Mg2 C1 H6 111.397
H4 C1 H5 107.478 H4 C1 H6 107.478
H5 C1 H6 107.478
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.848      
2 Mg 0.782      
3 Br -0.354      
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 -2.160 2.160
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.479 0.000 0.000
y 0.000 -34.479 0.000
z 0.000 0.000 -43.770
Traceless
 xyz
x 4.646 0.000 0.000
y 0.000 4.646 0.000
z 0.000 0.000 -9.291
Polar
3z2-r2-18.583
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 7.718 0.000 0.000
y 0.000 7.718 0.000
z 0.000 0.000 12.216


<r2> (average value of r2) Å2
<r2> 194.301
(<r2>)1/2 13.939