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

using model chemistry: wB97X-D/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-21.733904
Energy at 298.15K 
HF Energy-21.733904
Nuclear repulsion energy18.477089
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/CEP-121G
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 3003 3003 32.16 167.45 0.00 0.00
2 A1 1243 1243 5.72 47.39 0.08 0.15
3 A1 608 608 55.01 33.62 0.16 0.28
4 A1 281 281 16.98 10.81 0.16 0.28
5 E 3130 3130 13.14 130.46 0.75 0.86
5 E 3130 3130 13.23 130.34 0.75 0.86
6 E 1487 1487 2.22 8.12 0.75 0.86
6 E 1487 1487 2.21 8.14 0.75 0.86
7 E 669 669 106.90 3.47 0.75 0.86
7 E 668 668 106.85 3.51 0.75 0.86
8 E 113 113 28.43 0.04 0.75 0.86
8 E 113 113 28.40 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7965.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7965.5 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 wB97X-D/CEP-121G
ABC
5.31248 0.05258 0.05258

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-121G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.232
Mg2 0.000 0.000 -1.158
Br3 0.000 0.000 1.262
H4 0.000 1.024 -3.631
H5 0.887 -0.512 -3.631
H6 -0.887 -0.512 -3.631

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07414.49471.09951.09951.0995
Mg22.07412.42062.67702.67702.6770
Br34.49472.42064.99994.99994.9999
H41.09952.67704.99991.77441.7744
H51.09952.67704.99991.77441.7744
H61.09952.67704.99991.77441.7744

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 111.287
Mg2 C1 H5 111.287 Mg2 C1 H6 111.287
H4 C1 H5 107.596 H4 C1 H6 107.596
H5 C1 H6 107.596
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -1.061      
2 Mg 0.775      
3 Br -0.303      
4 H 0.196      
5 H 0.196      
6 H 0.196      


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 -3.090 3.090
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.691 0.000 0.000
y 0.000 -29.691 0.000
z 0.000 0.000 -40.505
Traceless
 xyz
x 5.407 0.000 0.000
y 0.000 5.407 0.000
z 0.000 0.000 -10.814
Polar
3z2-r2-21.627
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 5.179 0.000 0.000
y 0.000 5.179 0.000
z 0.000 0.000 11.035


<r2> (average value of r2) Å2
<r2> 119.135
(<r2>)1/2 10.915