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

using model chemistry: MP2=FULL/STO-3G

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/STO-3G
 hartrees
Energy at 0K-2781.128520
Energy at 298.15K 
HF Energy-2781.041786
Nuclear repulsion energy174.829532
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/STO-3G
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 3324 2954 2.97 46.20 0.00 0.01
2 A1 1538 1367 0.55 1.46 0.38 0.55
3 A1 870 774 95.80 3.99 0.29 0.45
4 A1 423 376 10.96 7.22 0.30 0.46
5 E 3501 3112 14.38 35.35 0.75 0.86
5 E 3501 3112 14.38 35.35 0.75 0.86
6 E 1795 1595 0.12 15.18 0.75 0.86
6 E 1795 1595 0.12 15.18 0.75 0.86
7 E 763 678 44.79 0.37 0.75 0.86
7 E 763 678 44.79 0.37 0.75 0.86
8 E 127 113 50.82 0.05 0.75 0.86
8 E 127 113 50.82 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9262.7 cm-1
Scaled (by 0.8889) Zero Point Vibrational Energy (zpe) 8233.6 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/STO-3G
ABC
5.39228 0.06088 0.06088

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.011
Mg2 0.000 0.000 -1.048
Br3 0.000 0.000 1.170
H4 0.000 1.017 -3.437
H5 0.881 -0.508 -3.437
H6 -0.881 -0.508 -3.437

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C11.96334.18161.10231.10231.1023
Mg21.96332.21832.59632.59632.5963
Br34.18162.21834.71804.71804.7180
H41.10232.59634.71801.76121.7612
H51.10232.59634.71801.76121.7612
H61.10232.59634.71801.76121.7612

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 112.707
Mg2 C1 H5 112.708 Mg2 C1 H6 112.708
H4 C1 H5 106.050 H4 C1 H6 106.050
H5 C1 H6 106.050
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability