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

using model chemistry: PBEPBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBEPBE/6-311G*
 hartrees
Energy at 0K-2813.617489
Energy at 298.15K 
HF Energy-2813.617489
Nuclear repulsion energy164.847317
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 PBEPBE/6-311G*
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 2958 2927 22.13 139.57 0.00 0.00
2 A1 1150 1138 1.23 87.96 0.09 0.16
3 A1 591 585 72.56 12.77 0.09 0.16
4 A1 291 288 15.19 24.66 0.19 0.33
5 E 3038 3006 13.47 132.81 0.75 0.86
5 E 3038 3006 13.47 132.81 0.75 0.86
6 E 1431 1416 0.28 2.05 0.75 0.86
6 E 1431 1416 0.28 2.05 0.75 0.86
7 E 596 590 77.30 3.70 0.75 0.86
7 E 596 590 77.30 3.70 0.75 0.86
8 E 105 104 22.73 0.59 0.75 0.86
8 E 105 104 22.73 0.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7664.7 cm-1
Scaled (by 0.9896) Zero Point Vibrational Energy (zpe) 7585.0 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 PBEPBE/6-311G*
ABC
5.31412 0.05380 0.05380

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/6-311G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.210
Mg2 0.000 0.000 -1.122
Br3 0.000 0.000 1.245
H4 0.000 1.024 -3.617
H5 0.887 -0.512 -3.617
H6 -0.887 -0.512 -3.617

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08814.45561.10221.10221.1022
Mg22.08812.36752.69702.69702.6970
Br34.45562.36754.96924.96924.9692
H41.10222.69704.96921.77411.7741
H51.10222.69704.96921.77411.7741
H61.10222.69704.96921.77411.7741

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 111.664
Mg2 C1 H5 111.664 Mg2 C1 H6 111.664
H4 C1 H5 107.192 H4 C1 H6 107.192
H5 C1 H6 107.192
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.044      
2 Mg 0.695      
3 Br -0.363      
4 H 0.237      
5 H 0.237      
6 H 0.237      


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 -2.310 2.310
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.822 0.000 0.000
y 0.000 -34.822 0.000
z 0.000 0.000 -42.971
Traceless
 xyz
x 4.074 0.000 0.000
y 0.000 4.074 0.000
z 0.000 0.000 -8.149
Polar
3z2-r2-16.298
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 6.485 0.000 0.000
y 0.000 6.485 0.000
z 0.000 0.000 12.123


<r2> (average value of r2) Å2
<r2> 197.070
(<r2>)1/2 14.038