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

using model chemistry: wB97X-D/3-21G*

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/3-21G*
 hartrees
Energy at 0K-2800.783275
Energy at 298.15K 
HF Energy-2800.783275
Nuclear repulsion energy167.610800
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/3-21G*
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 3048 2889 13.65 84.44 0.00 0.00
2 A1 1268 1202 2.67 37.95 0.04 0.08
3 A1 627 594 70.69 10.60 0.05 0.09
4 A1 316 299 11.14 14.20 0.16 0.28
5 E 3129 2966 11.40 113.05 0.75 0.86
5 E 3129 2966 11.43 113.10 0.75 0.86
6 E 1542 1462 0.06 6.02 0.75 0.86
6 E 1542 1462 0.06 6.03 0.75 0.86
7 E 659 625 111.99 3.20 0.75 0.86
7 E 659 625 111.98 3.20 0.75 0.86
8 E 124 118 26.64 0.18 0.75 0.86
8 E 124 118 26.63 0.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8084.3 cm-1
Scaled (by 0.9478) Zero Point Vibrational Energy (zpe) 7662.3 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/3-21G*
ABC
5.32040 0.05554 0.05554

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.170
Mg2 0.000 0.000 -1.093
Br3 0.000 0.000 1.224
H4 0.000 1.024 -3.567
H5 0.887 -0.512 -3.567
H6 -0.887 -0.512 -3.567

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07734.39371.09791.09791.0979
Mg22.07732.31642.67752.67752.6775
Br34.39372.31644.89864.89864.8986
H41.09792.67754.89861.77311.7731
H51.09792.67754.89861.77311.7731
H61.09792.67754.89861.77311.7731

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 111.185
Mg2 C1 H5 111.185 Mg2 C1 H6 111.185
H4 C1 H5 107.704 H4 C1 H6 107.704
H5 C1 H6 107.704
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.001      
2 Mg 0.715      
3 Br -0.350      
4 H 0.212      
5 H 0.212      
6 H 0.212      


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 -1.839 1.839
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -33.996 0.000 0.000
y 0.000 -33.996 0.000
z 0.000 0.000 -42.433
Traceless
 xyz
x 4.219 0.000 0.000
y 0.000 4.219 0.000
z 0.000 0.000 -8.438
Polar
3z2-r2-16.875
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 5.834 0.000 0.000
y 0.000 5.833 0.000
z 0.000 0.000 9.311


<r2> (average value of r2) Å2
<r2> 191.331
(<r2>)1/2 13.832