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: MP3/daug-cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at MP3/daug-cc-pVDZ
 hartrees
Energy at 0K-2812.051014
Energy at 298.15K 
HF Energy-2811.694201
Nuclear repulsion energy164.259839
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 MP3/daug-cc-pVDZ
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 3035 3035 27.36      
2 A1 1153 1153 1.65      
3 A1 604 604 82.73      
4 A1 297 297 14.34      
5 E 3122 3122 17.45      
5 E 3122 3122 17.45      
6 E 1440 1440 0.20      
6 E 1440 1440 0.20      
7 E 571 571 72.88      
7 E 571 571 72.88      
8 E 105 105 30.50      
8 E 105 105 30.50      

Unscaled Zero Point Vibrational Energy (zpe) 7783.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7783.0 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 MP3/daug-cc-pVDZ
ABC
5.28085 0.05340 0.05340

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/daug-cc-pVDZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.224
Mg2 0.000 0.000 -1.126
Br3 0.000 0.000 1.250
H4 0.000 1.028 -3.630
H5 0.890 -0.514 -3.630
H6 -0.890 -0.514 -3.630

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.09834.47361.10491.10491.1049
Mg22.09832.37532.70702.70702.7070
Br34.47362.37534.98674.98674.9867
H41.10492.70704.98671.77971.7797
H51.10492.70704.98671.77971.7797
H61.10492.70704.98671.77971.7797

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 111.566
Mg2 C1 H5 111.566 Mg2 C1 H6 111.566
H4 C1 H5 107.298 H4 C1 H6 107.298
H5 C1 H6 107.298
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability