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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-2798.138541
Energy at 298.15K 
HF Energy-2797.997203
Nuclear repulsion energy162.512957
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 MP2/3-21G
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 3060 2921 13.76 99.21 0.00 0.00
2 A1 1301 1242 0.95 51.16 0.04 0.09
3 A1 614 586 44.46 14.87 0.05 0.09
4 A1 295 282 10.44 20.63 0.21 0.35
5 E 3138 2995 14.49 120.07 0.75 0.86
5 E 3138 2995 14.49 120.07 0.75 0.86
6 E 1563 1492 0.01 7.58 0.75 0.86
6 E 1563 1492 0.01 7.58 0.75 0.86
7 E 675 644 114.92 5.22 0.75 0.86
7 E 675 644 114.92 5.22 0.75 0.86
8 E 93 89 26.06 0.01 0.75 0.86
8 E 93 89 26.06 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8104.1 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 7735.4 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 MP2/3-21G
ABC
5.31556 0.05225 0.05225

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.257
Mg2 0.000 0.000 -1.146
Br3 0.000 0.000 1.264
H4 0.000 1.024 -3.651
H5 0.887 -0.512 -3.651
H6 -0.887 -0.512 -3.651

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.11034.52091.09751.09751.0975
Mg22.11032.41062.70602.70602.7060
Br34.52092.41065.02095.02095.0209
H41.09752.70605.02091.77391.7739
H51.09752.70605.02091.77391.7739
H61.09752.70605.02091.77391.7739

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 111.064
Mg2 C1 H5 111.064 Mg2 C1 H6 111.064
H4 C1 H5 107.832 H4 C1 H6 107.832
H5 C1 H6 107.832
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability