return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2=FULL/cc-pVQZ

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/cc-pVQZ
 hartrees
Energy at 0K-2812.468512
Energy at 298.15K 
HF Energy-2811.791952
Nuclear repulsion energy167.630413
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/cc-pVQZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 3078 2946 11.93 176.80 0.00 0.00
2 A1 1154 1105 0.11 83.70 0.19 0.31
3 A1 636 609 87.97 9.87 0.12 0.22
4 A1 315 301 13.84 18.30 0.15 0.25
5 E 3173 3037 8.64 97.50 0.75 0.86
5 E 3173 3037 8.64 97.50 0.75 0.86
6 E 1459 1396 0.05 0.41 0.75 0.86
6 E 1459 1396 0.05 0.41 0.75 0.86
7 E 563 539 74.72 6.46 0.75 0.86
7 E 563 539 74.72 6.46 0.75 0.86
8 E 98 93 29.18 1.01 0.75 0.86
8 E 98 93 29.18 1.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 7883.5 cm-1
Scaled (by 0.9571) Zero Point Vibrational Energy (zpe) 7545.3 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/cc-pVQZ
ABC
5.45911 0.05567 0.05567

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVQZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.155
Mg2 0.000 0.000 -1.105
Br3 0.000 0.000 1.224
H4 0.000 1.011 -3.554
H5 0.875 -0.505 -3.554
H6 -0.875 -0.505 -3.554

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.05064.37941.08651.08651.0865
Mg22.05062.32882.64982.64982.6498
Br34.37942.32884.88414.88414.8841
H41.08652.64984.88411.75041.7504
H51.08652.64984.88411.75041.7504
H61.08652.64984.88411.75041.7504

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 111.542
Mg2 C1 H5 111.542 Mg2 C1 H6 111.542
H4 C1 H5 107.323 H4 C1 H6 107.323
H5 C1 H6 107.324
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability