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

using model chemistry: CCD/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-2798.522522
Energy at 298.15K 
HF Energy-2798.249626
Nuclear repulsion energy167.169748
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 CCD/3-21G*
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 3005 2874 16.92      
2 A1 1273 1217 2.48      
3 A1 626 599 55.88      
4 A1 321 307 11.06      
5 E 3081 2947 14.36      
5 E 3081 2947 14.36      
6 E 1551 1483 0.14      
6 E 1551 1483 0.14      
7 E 657 628 108.34      
7 E 657 628 108.34      
8 E 123 118 22.94      
8 E 123 118 22.94      

Unscaled Zero Point Vibrational Energy (zpe) 8023.3 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 7674.3 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 CCD/3-21G*
ABC
5.25720 0.05514 0.05514

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.189
Mg2 0.000 0.000 -1.089
Br3 0.000 0.000 1.227
H4 0.000 1.030 -3.580
H5 0.892 -0.515 -3.580
H6 -0.892 -0.515 -3.580

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.09964.41591.10171.10171.1017
Mg22.09962.31632.69562.69562.6956
Br34.41592.31634.91654.91654.9165
H41.10172.69564.91651.78371.7837
H51.10172.69564.91651.78371.7837
H61.10172.69564.91651.78371.7837

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 110.814
Mg2 C1 H5 110.814 Mg2 C1 H6 110.814
H4 C1 H5 108.096 H4 C1 H6 108.096
H5 C1 H6 108.096
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability