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: MP4/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP4/6-311G**
 hartrees
Energy at 0K-2812.030840
Energy at 298.15K 
HF Energy-2811.680976
Nuclear repulsion energy165.365567
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 MP4/6-311G**
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 3021 2929        
2 A1 1184 1148        
3 A1 609 591        
4 A1 305 296        
5 E 3106 3012        
5 E 3106 3011        
6 E 1460 1416        
6 E 1460 1415        
7 E 591 573        
7 E 591 573        
8 E 109 105        
8 E 108 105        

Unscaled Zero Point Vibrational Energy (zpe) 7823.9 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 7586.8 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 MP4/6-311G**
ABC
5.33100 0.05410 0.05410

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311G**

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.205
Mg2 0.000 0.000 -1.116
Br3 0.000 0.000 1.241
H4 0.000 1.023 -3.607
H5 0.886 -0.511 -3.607
H6 -0.886 -0.511 -3.607

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08884.44611.09901.09901.0990
Mg22.08882.35742.69302.69302.6930
Br34.44612.35744.95534.95534.9553
H41.09902.69304.95531.77131.7713
H51.09902.69304.95531.77131.7713
H61.09902.69304.95531.77131.7713

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 111.482
Mg2 C1 H5 111.482 Mg2 C1 H6 111.482
H4 C1 H5 107.387 H4 C1 H6 107.387
H5 C1 H6 107.387
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability