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

using model chemistry: HF/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 HF/6-31G
 hartrees
Energy at 0K-2809.040741
Energy at 298.15K 
HF Energy-2809.040741
Nuclear repulsion energy163.976754
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 HF/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 3156 2850 43.37 110.52 0.01 0.02
2 A1 1353 1222 2.09 46.28 0.11 0.20
3 A1 636 575 48.19 19.26 0.12 0.21
4 A1 304 275 14.85 14.62 0.24 0.38
5 E 3238 2924 24.63 158.29 0.75 0.86
5 E 3238 2924 24.63 158.29 0.75 0.86
6 E 1617 1460 1.19 10.89 0.75 0.86
6 E 1617 1460 1.19 10.89 0.75 0.86
7 E 690 623 113.23 3.44 0.75 0.86
7 E 690 623 113.23 3.44 0.75 0.86
8 E 137 123 39.42 0.04 0.75 0.86
8 E 137 123 39.42 0.04 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8407.1 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 7590.7 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 HF/6-31G
ABC
5.41773 0.05329 0.05329

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.218
Mg2 0.000 0.000 -1.143
Br3 0.000 0.000 1.253
H4 0.000 1.014 -3.611
H5 0.879 -0.507 -3.611
H6 -0.879 -0.507 -3.611

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07524.47081.08791.08791.0879
Mg22.07522.39552.66842.66842.6684
Br34.47082.39554.96824.96824.9682
H41.08792.66844.96821.75711.7571
H51.08792.66844.96821.75711.7571
H61.08792.66844.96821.75711.7571

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 111.166
Mg2 C1 H5 111.166 Mg2 C1 H6 111.166
H4 C1 H5 107.724 H4 C1 H6 107.724
H5 C1 H6 107.724
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.930      
2 Mg 0.932      
3 Br -0.508      
4 H 0.169      
5 H 0.169      
6 H 0.169      


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 -3.224 3.224
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -34.510 0.000 0.000
y 0.000 -34.510 0.000
z 0.000 0.000 -47.264
Traceless
 xyz
x 6.377 0.000 0.000
y 0.000 6.377 0.000
z 0.000 0.000 -12.754
Polar
3z2-r2-25.509
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 4.358 0.000 0.000
y 0.000 4.358 0.000
z 0.000 0.000 8.962


<r2> (average value of r2) Å2
<r2> 199.145
(<r2>)1/2 14.112