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

using model chemistry: CISD/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 CISD/3-21G
 hartrees
Energy at 0K-2798.150950
Energy at 298.15K 
HF Energy-2797.997158
Nuclear repulsion energy162.522804
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 CISD/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 3035 2857 22.38      
2 A1 1307 1230 0.96      
3 A1 616 579 43.21      
4 A1 296 279 10.61      
5 E 3104 2922 19.03      
5 E 3104 2922 19.03      
6 E 1560 1468 0.04      
6 E 1560 1468 0.04      
7 E 676 636 113.37      
7 E 676 636 113.37      
8 E 95 89 27.15      
8 E 95 89 27.15      

Unscaled Zero Point Vibrational Energy (zpe) 8060.3 cm-1
Scaled (by 0.9413) Zero Point Vibrational Energy (zpe) 7587.2 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 CISD/3-21G
ABC
5.31403 0.05226 0.05226

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.255
Mg2 0.000 0.000 -1.146
Br3 0.000 0.000 1.264
H4 0.000 1.024 -3.654
H5 0.887 -0.512 -3.654
H6 -0.887 -0.512 -3.654

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.10934.51941.09911.09911.0991
Mg22.10932.41012.70902.70902.7090
Br34.51942.41015.02355.02355.0235
H41.09912.70905.02351.77421.7742
H51.09912.70905.02351.77421.7742
H61.09912.70905.02351.77421.7742

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 111.259
Mg2 C1 H5 111.259 Mg2 C1 H6 111.259
H4 C1 H5 107.625 H4 C1 H6 107.625
H5 C1 H6 107.625
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability