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

using model chemistry: B2PLYP/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B2PLYP/6-31G*
 hartrees
Energy at 0K-2811.105170
Energy at 298.15K 
HF Energy-2811.014873
Nuclear repulsion energy166.384255
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 B2PLYP/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 3066 2911 15.46 105.43 0.00 0.00
2 A1 1226 1163 4.37 57.82 0.08 0.15
3 A1 612 581 65.44 11.33 0.08 0.15
4 A1 307 291 13.59 20.02 0.18 0.31
5 E 3148 2988 13.60 122.36 0.75 0.86
5 E 3148 2988 13.60 122.36 0.75 0.86
6 E 1514 1437 0.03 4.58 0.75 0.86
6 E 1514 1437 0.03 4.58 0.75 0.86
7 E 624 592 87.68 2.44 0.75 0.86
7 E 624 592 87.68 2.44 0.75 0.86
8 E 126 119 23.75 0.55 0.75 0.86
8 E 126 119 23.75 0.55 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8016.1 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 7608.9 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 B2PLYP/6-31G*
ABC
5.36699 0.05475 0.05475

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.188
Mg2 0.000 0.000 -1.107
Br3 0.000 0.000 1.234
H4 0.000 1.019 -3.587
H5 0.883 -0.510 -3.587
H6 -0.883 -0.510 -3.587

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08044.42111.09481.09481.0948
Mg22.08042.34072.68132.68132.6813
Br34.42112.34074.92734.92734.9273
H41.09482.68134.92731.76541.7654
H51.09482.68134.92731.76541.7654
H61.09482.68134.92731.76541.7654

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 111.409
Mg2 C1 H5 111.409 Mg2 C1 H6 111.409
H4 C1 H5 107.466 H4 C1 H6 107.466
H5 C1 H6 107.466
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.761      
2 Mg 0.568      
3 Br -0.301      
4 H 0.165      
5 H 0.165      
6 H 0.165      


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 -2.151 2.151
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.358 0.000 0.000
y 0.000 -34.358 0.000
z 0.000 0.000 -42.539
Traceless
 xyz
x 4.091 0.000 0.000
y 0.000 4.091 0.000
z 0.000 0.000 -8.181
Polar
3z2-r2-16.362
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 6.043 0.000 0.000
y 0.000 6.043 0.000
z 0.000 0.000 10.386


<r2> (average value of r2) Å2
<r2> 193.789
(<r2>)1/2 13.921