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

using model chemistry: MP2/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/STO-3G
 hartrees
Energy at 0K-2781.109722
Energy at 298.15K 
HF Energy-2781.041774
Nuclear repulsion energy174.848315
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/STO-3G
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 3323 2897 3.16 43.59 0.01 0.02
2 A1 1538 1341 0.69 1.74 0.02 0.05
3 A1 868 757 90.97 17.52 0.31 0.47
4 A1 419 365 9.05 0.27 0.50 0.66
5 E 3500 3052 14.44 36.07 0.75 0.86
5 E 3500 3052 14.44 36.07 0.75 0.86
6 E 1795 1565 0.12 15.37 0.75 0.86
6 E 1795 1565 0.12 15.37 0.75 0.86
7 E 763 666 44.97 0.38 0.75 0.86
7 E 763 666 44.97 0.38 0.75 0.86
8 E 127 111 51.19 0.05 0.75 0.86
8 E 127 111 51.19 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9259.2 cm-1
Scaled (by 0.8719) Zero Point Vibrational Energy (zpe) 8073.1 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/STO-3G
ABC
5.39203 0.06089 0.06089

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/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
C11.96364.18141.10241.10241.1024
Mg21.96362.21782.59672.59672.5967
Br34.18142.21784.71814.71814.7181
H41.10242.59674.71811.76131.7613
H51.10242.59674.71811.76131.7613
H61.10242.59674.71811.76131.7613

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 112.718
Mg2 C1 H5 112.718 Mg2 C1 H6 112.718
H4 C1 H5 106.038 H4 C1 H6 106.038
H5 C1 H6 106.038
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability