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

using model chemistry: CCSD(T)/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 CCSD(T)/6-31G**
 hartrees
Energy at 0K-2809.516286
Energy at 298.15K 
HF Energy-2809.189091
Nuclear repulsion energy165.727092
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 CCSD(T)/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 3077 2918        
2 A1 1214 1152        
3 A1 607 576        
4 A1 307 291        
5 E 3168 3005        
5 E 3168 3004        
6 E 1509 1431        
6 E 1509 1431        
7 E 610 579        
7 E 610 579        
8 E 126 120        
8 E 126 120        

Unscaled Zero Point Vibrational Energy (zpe) 8015.5 cm-1
Scaled (by 0.9485) Zero Point Vibrational Energy (zpe) 7602.7 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 CCSD(T)/6-31G**
ABC
5.37874 0.05427 0.05427

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.204
Mg2 0.000 0.000 -1.111
Br3 0.000 0.000 1.239
H4 0.000 1.018 -3.602
H5 0.882 -0.509 -3.602
H6 -0.882 -0.509 -3.602

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.09244.44241.09321.09321.0932
Mg22.09242.35002.69062.69062.6906
Br34.44242.35004.94654.94654.9465
H41.09322.69064.94651.76351.7635
H51.09322.69064.94651.76351.7635
H61.09322.69064.94651.76351.7635

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 111.361
Mg2 C1 H5 111.361 Mg2 C1 H6 111.361
H4 C1 H5 107.517 H4 C1 H6 107.517
H5 C1 H6 107.517
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability