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

using model chemistry: QCISD/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 QCISD/6-31G
 hartrees
Energy at 0K-2809.206242
Energy at 298.15K 
HF Energy-2809.039985
Nuclear repulsion energy162.759473
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 QCISD/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 2990 2881 31.54      
2 A1 1269 1223 2.44      
3 A1 600 578 38.16      
4 A1 294 283 11.77      
5 E 3075 2963 22.91      
5 E 3075 2963 22.91      
6 E 1507 1452 0.12      
6 E 1507 1452 0.12      
7 E 658 634 106.02      
7 E 658 634 106.02      
8 E 128 124 27.14      
8 E 128 124 27.14      

Unscaled Zero Point Vibrational Energy (zpe) 7944.4 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 7655.2 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 QCISD/6-31G
ABC
5.24087 0.05249 0.05249

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.247
Mg2 0.000 0.000 -1.145
Br3 0.000 0.000 1.262
H4 0.000 1.031 -3.644
H5 0.893 -0.516 -3.644
H6 -0.893 -0.516 -3.644

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.10164.50851.10511.10511.1051
Mg22.10162.40692.70282.70282.7028
Br34.50852.40695.01245.01245.0124
H41.10512.70285.01241.78651.7865
H51.10512.70285.01241.78651.7865
H61.10512.70285.01241.78651.7865

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 111.033
Mg2 C1 H5 111.033 Mg2 C1 H6 111.033
H4 C1 H5 107.865 H4 C1 H6 107.865
H5 C1 H6 107.866
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability