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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G**
 hartrees
Energy at 0K-2809.520048
Energy at 298.15K 
HF Energy-2809.189144
Nuclear repulsion energy166.303877
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 MP2=FULL/6-31G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3126 2921 10.27 106.83 0.00 0.00
2 A1 1221 1141 4.74 57.61 0.08 0.16
3 A1 620 579 70.15 10.86 0.08 0.14
4 A1 312 291 12.89 17.40 0.18 0.30
5 E 3228 3016 11.14 110.60 0.75 0.86
5 E 3228 3016 11.14 110.60 0.75 0.86
6 E 1518 1419 0.28 4.17 0.75 0.86
6 E 1518 1419 0.28 4.17 0.75 0.86
7 E 617 577 90.82 2.90 0.75 0.86
7 E 617 577 90.82 2.90 0.75 0.86
8 E 128 119 26.67 0.51 0.75 0.86
8 E 128 119 26.67 0.51 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8130.5 cm-1
Scaled (by 0.9344) Zero Point Vibrational Energy (zpe) 7597.1 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 MP2=FULL/6-31G**
ABC
5.41823 0.05466 0.05466

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.191
Mg2 0.000 0.000 -1.108
Br3 0.000 0.000 1.235
H4 0.000 1.014 -3.587
H5 0.879 -0.507 -3.587
H6 -0.879 -0.507 -3.587

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08304.42591.08901.08901.0890
Mg22.08302.34282.67872.67872.6787
Br34.42592.34284.92754.92754.9275
H41.08902.67874.92751.75701.7570
H51.08902.67874.92751.75701.7570
H61.08902.67874.92751.75701.7570

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 111.331
Mg2 C1 H5 111.331 Mg2 C1 H6 111.331
H4 C1 H5 107.549 H4 C1 H6 107.549
H5 C1 H6 107.550
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability