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

using model chemistry: TPSSh/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at TPSSh/6-31G(2df,p)
 hartrees
Energy at 0K-2811.821071
Energy at 298.15K 
HF Energy-2811.821071
Nuclear repulsion energy166.581578
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 TPSSh/6-31G(2df,p)
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 3012 2907 20.74 109.95 0.00 0.00
2 A1 1178 1137 6.88 56.55 0.10 0.17
3 A1 604 583 71.54 9.66 0.08 0.14
4 A1 305 294 11.28 21.01 0.14 0.25
5 E 3089 2981 16.78 125.15 0.75 0.86
5 E 3089 2981 16.78 125.13 0.75 0.86
6 E 1467 1416 0.86 2.88 0.75 0.86
6 E 1467 1416 0.86 2.88 0.75 0.86
7 E 576 556 86.35 2.87 0.75 0.86
7 E 576 556 86.35 2.87 0.75 0.86
8 E 116 112 22.54 0.81 0.75 0.86
8 E 116 112 22.54 0.81 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7797.1 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 7524.2 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 TPSSh/6-31G(2df,p)
ABC
5.37437 0.05488 0.05488

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.183
Mg2 0.000 0.000 -1.104
Br3 0.000 0.000 1.232
H4 0.000 1.019 -3.592
H5 0.882 -0.509 -3.592
H6 -0.882 -0.509 -3.592

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07964.41531.09731.09731.0973
Mg22.07962.33572.68832.68832.6883
Br34.41532.33574.92994.92994.9299
H41.09732.68834.92991.76421.7642
H51.09732.68834.92991.76421.7642
H61.09732.68834.92991.76421.7642

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 111.840
Mg2 C1 H5 111.840 Mg2 C1 H6 111.840
H4 C1 H5 107.002 H4 C1 H6 107.002
H5 C1 H6 107.002
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.670      
2 Mg 0.411      
3 Br -0.175      
4 H 0.144      
5 H 0.144      
6 H 0.144      


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 -2.051 2.051
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.208 0.000 0.000
y 0.000 7.208 0.000
z 0.000 0.000 10.858


<r2> (average value of r2) Å2
<r2> 193.319
(<r2>)1/2 13.904