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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-2809.484412
Energy at 298.15K 
HF Energy-2809.183480
Nuclear repulsion energy165.714788
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 3046 2901 19.16      
2 A1 1235 1176 4.97      
3 A1 611 582 63.81      
4 A1 308 293 13.57      
5 E 3129 2979 16.41      
5 E 3129 2979 16.41      
6 E 1513 1441 0.02      
6 E 1513 1441 0.02      
7 E 618 588 93.80      
7 E 618 588 93.80      
8 E 126 120 25.50      
8 E 126 120 25.50      

Unscaled Zero Point Vibrational Energy (zpe) 7984.0 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 7603.1 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
5.33894 0.05430 0.05430

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 -3.201
Mg2 0.000 0.000 -1.111
Br3 0.000 0.000 1.239
H4 0.000 1.022 -3.603
H5 0.885 -0.511 -3.603
H6 -0.885 -0.511 -3.603

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08914.43921.09851.09851.0985
Mg22.08912.35002.69342.69342.6934
Br34.43922.35004.94874.94874.9487
H41.09852.69344.94871.77001.7700
H51.09852.69344.94871.77001.7700
H61.09852.69344.94871.77001.7700

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 111.517
Mg2 C1 H5 111.517 Mg2 C1 H6 111.517
H4 C1 H5 107.350 H4 C1 H6 107.350
H5 C1 H6 107.350
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability