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

using model chemistry: MP2=FULL/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 MP2=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-2809.826074
Energy at 298.15K 
HF Energy-2809.364578
Nuclear repulsion energy167.899961
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 MP2=FULL/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 3103 2917 4.19 106.72 0.00 0.00
2 A1 1197 1125 0.66 47.01 0.12 0.21
3 A1 635 597 74.79 7.91 0.07 0.13
4 A1 316 297 10.82 16.96 0.14 0.25
5 E 3199 3007 6.66 99.46 0.75 0.86
5 E 3199 3007 6.66 99.46 0.75 0.86
6 E 1490 1401 0.34 2.67 0.75 0.86
6 E 1490 1401 0.34 2.67 0.75 0.86
7 E 583 548 93.90 2.38 0.75 0.86
7 E 583 548 93.90 2.38 0.75 0.86
8 E 137 129 23.92 0.70 0.75 0.86
8 E 137 129 23.92 0.70 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8033.7 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 7550.9 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 MP2=FULL/6-31G(2df,p)
ABC
5.44338 0.05576 0.05576

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.158
Mg2 0.000 0.000 -1.095
Br3 0.000 0.000 1.222
H4 0.000 1.012 -3.564
H5 0.876 -0.506 -3.564
H6 -0.876 -0.506 -3.564

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06284.37981.09081.09081.0908
Mg22.06282.31702.66892.66892.6689
Br34.37982.31704.89244.89244.8924
H41.09082.66894.89241.75301.7530
H51.09082.66894.89241.75301.7530
H61.09082.66894.89241.75301.7530

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 111.897
Mg2 C1 H5 111.897 Mg2 C1 H6 111.897
H4 C1 H5 106.940 H4 C1 H6 106.940
H5 C1 H6 106.940
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability