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

using model chemistry: B1B95/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-2814.623461
Energy at 298.15K 
HF Energy-2814.623461
Nuclear repulsion energy166.516009
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/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3041 2911 20.25 152.33 0.00 0.00
2 A1 1153 1104 0.52 80.88 0.15 0.27
3 A1 613 586 82.24 13.07 0.12 0.21
4 A1 301 288 15.37 20.97 0.17 0.30
5 E 3125 2991 11.78 119.50 0.75 0.86
5 E 3125 2991 11.78 119.49 0.75 0.86
6 E 1450 1388 0.00 0.88 0.75 0.86
6 E 1450 1388 0.00 0.88 0.75 0.86
7 E 581 556 71.04 5.17 0.75 0.86
7 E 581 556 71.05 5.17 0.75 0.86
8 E 103 98 26.40 0.84 0.75 0.86
8 E 103 98 26.40 0.84 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7811.5 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 7476.4 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/cc-pVTZ
ABC
5.41429 0.05490 0.05490

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.178
Mg2 0.000 0.000 -1.112
Br3 0.000 0.000 1.233
H4 0.000 1.015 -3.576
H5 0.879 -0.507 -3.576
H6 -0.879 -0.507 -3.576

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06624.41101.08991.08991.0899
Mg22.06622.34492.66452.66452.6645
Br34.41102.34494.91454.91454.9145
H41.08992.66454.91451.75771.7577
H51.08992.66454.91451.75771.7577
H61.08992.66454.91451.75771.7577

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 111.394
Mg2 C1 H5 111.394 Mg2 C1 H6 111.394
H4 C1 H5 107.482 H4 C1 H6 107.482
H5 C1 H6 107.482
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.565      
2 Mg 0.576      
3 Br -0.373      
4 H 0.121      
5 H 0.121      
6 H 0.121      


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 -2.163 2.163
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.385 0.000 0.000
y 0.000 -34.385 0.000
z 0.000 0.000 -43.554
Traceless
 xyz
x 4.584 0.000 0.000
y 0.000 4.584 0.000
z 0.000 0.000 -9.168
Polar
3z2-r2-18.337
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 6.896 0.000 0.000
y 0.000 6.896 0.000
z 0.000 0.000 11.483


<r2> (average value of r2) Å2
<r2> 193.472
(<r2>)1/2 13.909