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

using model chemistry: QCISD/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-2812.257129
Energy at 298.15K 
HF Energy-2811.785601
Nuclear repulsion energy165.904400
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/cc-pVTZ
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 3030 2895 23.23      
2 A1 1179 1126 0.81      
3 A1 611 584 81.12      
4 A1 305 292 13.82      
5 E 3108 2970 16.78      
5 E 3108 2970 16.78      
6 E 1470 1405 0.11      
6 E 1470 1405 0.11      
7 E 578 552 74.63      
7 E 578 552 74.63      
8 E 102 97 30.45      
8 E 102 97 30.45      

Unscaled Zero Point Vibrational Energy (zpe) 7820.0 cm-1
Scaled (by 0.9555) Zero Point Vibrational Energy (zpe) 7472.0 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/cc-pVTZ
ABC
5.40161 0.05443 0.05443

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.195
Mg2 0.000 0.000 -1.112
Br3 0.000 0.000 1.238
H4 0.000 1.016 -3.598
H5 0.880 -0.508 -3.598
H6 -0.880 -0.508 -3.598

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08294.43281.09281.09281.0928
Mg22.08292.34982.68502.68502.6850
Br34.43282.34984.94084.94084.9408
H41.09282.68504.94081.75971.7597
H51.09282.68504.94081.75971.7597
H61.09282.68504.94081.75971.7597

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 111.608
Mg2 C1 H5 111.608 Mg2 C1 H6 111.608
H4 C1 H5 107.252 H4 C1 H6 107.252
H5 C1 H6 107.252
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability