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

using model chemistry: wB97X-D/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 wB97X-D/6-31G*
 hartrees
Energy at 0K-2811.765438
Energy at 298.15K 
HF Energy-2811.765438
Nuclear repulsion energy166.810118
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 wB97X-D/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 ?a 622 590 93.85 2.56 0.75 0.86
2 ?a 622 590 93.78 2.56 0.75 0.86
3 ?a 605 574 76.34 11.58 0.09 0.16
4 A1 3055 2897 19.33 98.29 0.00 0.00
5 A1 1228 1165 0.26 47.20 0.08 0.15
5 A1 306 290 13.05 16.40 0.16 0.28
6 E 3137 2976 13.82 123.04 0.75 0.86
6 E 3137 2976 13.83 123.07 0.75 0.86
7 E 1502 1425 0.00 4.84 0.75 0.86
7 E 1502 1425 0.00 4.85 0.75 0.86
8 E 126 119 27.79 0.46 0.75 0.86
8 E 126 119 27.80 0.46 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7983.9 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 7572.7 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 wB97X-D/6-31G*
ABC
5.37496 0.05507 0.05507

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.176
Mg2 0.000 0.000 -1.104
Br3 0.000 0.000 1.230
H4 0.000 1.018 -3.583
H5 0.882 -0.509 -3.583
H6 -0.882 -0.509 -3.583

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07194.40621.09681.09681.0968
Mg22.07192.33432.68002.68002.6800
Br34.40622.33434.91984.91984.9198
H41.09682.68004.91981.76411.7641
H51.09682.68004.91981.76411.7641
H61.09682.68004.91981.76411.7641

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 111.782
Mg2 C1 H5 111.782 Mg2 C1 H6 111.782
H4 C1 H5 107.064 H4 C1 H6 107.064
H5 C1 H6 107.064
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.803      
2 Mg 0.575      
3 Br -0.302      
4 H 0.177      
5 H 0.177      
6 H 0.177      


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 -2.119 2.119
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.066 0.000 0.000
y 0.000 -34.066 0.000
z 0.000 0.000 -42.558
Traceless
 xyz
x 4.246 0.000 0.000
y 0.000 4.246 0.000
z 0.000 0.000 -8.492
Polar
3z2-r2-16.984
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 6.103 0.000 0.000
y 0.000 6.103 0.000
z 0.000 0.000 9.922


<r2> (average value of r2) Å2
<r2> 192.789
(<r2>)1/2 13.885