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

using model chemistry: MP2/SDD

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/SDD
 hartrees
Energy at 0K-252.536664
Energy at 298.15K 
HF Energy-252.403787
Nuclear repulsion energy60.131388
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/SDD
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 3003 2899 30.61 125.19 0.00 0.00
2 A1 1262 1218 0.08 100.07 0.14 0.24
3 A1 600 579 48.93 16.08 0.11 0.20
4 A1 280 271 16.81 23.54 0.21 0.35
5 E 3108 3000 22.30 114.06 0.75 0.86
5 E 3108 3000 22.30 114.06 0.75 0.86
6 E 1479 1427 1.88 5.90 0.75 0.86
6 E 1479 1427 1.88 5.90 0.75 0.86
7 E 653 631 105.27 3.17 0.75 0.86
7 E 653 631 105.27 3.17 0.75 0.86
8 E 107 103 31.07 0.06 0.75 0.86
8 E 107 103 31.07 0.06 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7918.8 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 7644.0 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/SDD
ABC
5.22196 0.05196 0.05196

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.257
Mg2 0.000 0.000 -1.159
Br3 0.000 0.000 1.269
H4 0.000 1.033 -3.655
H5 0.895 -0.517 -3.655
H6 -0.895 -0.517 -3.655

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.09774.52581.10731.10731.1073
Mg22.09772.42812.70112.70112.7011
Br34.52582.42815.03115.03115.0311
H41.10732.70115.03111.78971.7897
H51.10732.70115.03111.78971.7897
H61.10732.70115.03111.78971.7897

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 111.066
Mg2 C1 H5 111.066 Mg2 C1 H6 111.066
H4 C1 H5 107.831 H4 C1 H6 107.831
H5 C1 H6 107.831
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability