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

using model chemistry: G3B3

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at G3B3
 hartrees
Energy at 0K-2813.418437
Energy at 298.15K-2813.412300
HF Energy-2813.953631
Nuclear repulsion energy165.069340
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 B3LYP/6-31G*
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 3035 2915 18.60 105.22 0.00 0.00
2 A1 1209 1161 4.70 55.87 0.08 0.14
3 A1 607 583 64.85 11.29 0.08 0.16
4 A1 304 292 13.48 21.25 0.18 0.31
5 E 3112 2988 13.95 125.90 0.75 0.86
5 E 3112 2988 13.95 125.91 0.75 0.86
6 E 1495 1436 0.03 4.64 0.75 0.86
6 E 1495 1436 0.03 4.64 0.75 0.86
7 E 622 598 83.94 2.28 0.75 0.86
7 E 622 598 83.94 2.28 0.75 0.86
8 E 125 120 22.03 0.53 0.75 0.86
8 E 125 120 22.03 0.53 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7931.4 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 7616.5 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 B3LYP/6-31G*
ABC
5.34996 0.05475 0.05475

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.187
Mg2 0.000 0.000 -1.107
Br3 0.000 0.000 1.234
H4 0.000 1.021 -3.588
H5 0.884 -0.510 -3.588
H6 -0.884 -0.510 -3.588

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07984.42081.09681.09681.0968
Mg22.07982.34102.68262.68262.6826
Br34.42082.34104.92864.92864.9286
H41.09682.68264.92861.76821.7682
H51.09682.68264.92861.76821.7682
H61.09682.68264.92861.76821.7682

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 111.389
Mg2 C1 H5 111.389 Mg2 C1 H6 111.389
H4 C1 H5 107.487 H4 C1 H6 107.487
H5 C1 H6 107.487
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.754      
2 Mg 0.559      
3 Br -0.290      
4 H 0.161      
5 H 0.161      
6 H 0.161      


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 -2.115 2.115
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 193.664
(<r2>)1/2 13.916