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

using model chemistry: M06-2X/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 M06-2X/6-31+G**
 hartrees
Energy at 0K-2811.802019
Energy at 298.15K 
HF Energy-2811.802019
Nuclear repulsion energy166.832299
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 M06-2X/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 ?a 625 595 77.65 12.33 0.20 0.34
2 ?a 616 587 73.80 2.49 0.75 0.86
3 ?a 616 587 74.00 2.56 0.75 0.86
4 A1 3065 2919 23.34 160.75 0.00 0.00
5 A1 1171 1115 0.15 92.14 0.19 0.33
5 A1 305 290 16.89 21.55 0.18 0.30
6 E 3156 3005 8.80 123.27 0.75 0.86
6 E 3156 3005 8.74 123.48 0.75 0.86
7 E 1465 1395 0.36 2.11 0.75 0.86
7 E 1465 1395 0.35 2.10 0.75 0.86
8 E 157 149 25.58 1.11 0.75 0.86
8 E 157 149 25.63 1.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7975.9 cm-1
Scaled (by 0.9522) Zero Point Vibrational Energy (zpe) 7594.7 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 M06-2X/6-31+G**
ABC
5.34714 0.05513 0.05513

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31+G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.174
Mg2 0.000 0.000 -1.108
Br3 0.000 0.000 1.230
H4 0.000 1.021 -3.567
H5 0.884 -0.511 -3.567
H6 -0.884 -0.511 -3.567

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06654.40421.09411.09411.0941
Mg22.06652.33762.66302.66302.6630
Br34.40422.33764.90454.90454.9045
H41.09412.66304.90451.76871.7687
H51.09412.66304.90451.76871.7687
H61.09412.66304.90451.76871.7687

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 111.042
Mg2 C1 H5 111.042 Mg2 C1 H6 111.042
H4 C1 H5 107.855 H4 C1 H6 107.855
H5 C1 H6 107.855
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.824      
2 Mg 0.758      
3 Br -0.423      
4 H 0.163      
5 H 0.163      
6 H 0.163      


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 -2.244 2.244
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.831 0.000 0.000
y 0.000 -34.831 0.000
z 0.000 0.000 -43.749
Traceless
 xyz
x 4.459 0.000 0.000
y 0.000 4.459 0.000
z 0.000 0.000 -8.917
Polar
3z2-r2-17.834
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 6.441 0.000 0.000
y 0.000 6.442 0.002
z 0.000 0.002 11.632


<r2> (average value of r2) Å2
<r2> 193.037
(<r2>)1/2 13.894