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

using model chemistry: CCSD(T)/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-2809.769461
Energy at 298.15K 
HF Energy-2809.364658
Nuclear repulsion energy166.336134
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(2df,p)
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 3051 3051        
2 A1 1193 1193        
3 A1 615 615        
4 A1 309 309        
5 E 3135 3135        
5 E 3134 3134        
6 E 1477 1477        
6 E 1477 1477        
7 E 580 580        
7 E 580 580        
8 E 116 116        
8 E 115 115        

Unscaled Zero Point Vibrational Energy (zpe) 7890.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7890.6 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(2df,p)
ABC
5.38601 0.05472 0.05472

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.187
Mg2 0.000 0.000 -1.107
Br3 0.000 0.000 1.234
H4 0.000 1.017 -3.594
H5 0.881 -0.509 -3.594
H6 -0.881 -0.509 -3.594

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08054.42141.09581.09581.0958
Mg22.08052.34082.68742.68742.6874
Br34.42142.34084.93434.93434.9343
H41.09582.68744.93431.76231.7623
H51.09582.68744.93431.76231.7623
H61.09582.68744.93431.76231.7623

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 111.796
Mg2 C1 H5 111.796 Mg2 C1 H6 111.796
H4 C1 H5 107.049 H4 C1 H6 107.049
H5 C1 H6 107.049
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability