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

using model chemistry: MP4/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP4/6-31G*
 hartrees
Energy at 0K-2809.489414
Energy at 298.15K 
HF Energy-2809.183451
Nuclear repulsion energy165.669981
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 MP4/6-31G*
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 3041 2904        
2 A1 1225 1170        
3 A1 610 583        
4 A1 307 293        
5 E 3129 2988        
5 E 3129 2987        
6 E 1508 1440        
6 E 1508 1440        
7 E 616 588        
7 E 616 588        
8 E 125 120        
8 E 125 120        

Unscaled Zero Point Vibrational Energy (zpe) 7970.0 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 7609.8 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 MP4/6-31G*
ABC
5.33039 0.05428 0.05428

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.201
Mg2 0.000 0.000 -1.112
Br3 0.000 0.000 1.239
H4 0.000 1.023 -3.604
H5 0.886 -0.511 -3.604
H6 -0.886 -0.511 -3.604

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08984.44041.09901.09901.0990
Mg22.08982.35062.69382.69382.6938
Br34.44042.35064.94964.94964.9496
H41.09902.69384.94961.77141.7714
H51.09902.69384.94961.77141.7714
H61.09902.69384.94961.77141.7714

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 111.476
Mg2 C1 H5 111.476 Mg2 C1 H6 111.476
H4 C1 H5 107.394 H4 C1 H6 107.394
H5 C1 H6 107.394
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability