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/TZVP

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/TZVP
 hartrees
Energy at 0K-2812.151642
Energy at 298.15K 
HF Energy-2811.717198
Nuclear repulsion energy164.356558
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/TZVP
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 3044 2931        
2 A1 1224 1178        
3 A1 589 567        
4 A1 291 281        
5 E 3130 3014        
5 E 3129 3013        
6 E 1433 1380        
6 E 1432 1379        
7 E 603 581        
7 E 603 581        
8 E 103 99        
8 E 102 98        

Unscaled Zero Point Vibrational Energy (zpe) 7841.7 cm-1
Scaled (by 0.9629) Zero Point Vibrational Energy (zpe) 7550.8 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/TZVP
ABC
5.41232 0.05343 0.05343

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.220
Mg2 0.000 0.000 -1.128
Br3 0.000 0.000 1.250
H4 0.000 1.015 -3.628
H5 0.879 -0.507 -3.628
H6 -0.879 -0.507 -3.628

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.09184.46991.09391.09391.0939
Mg22.09182.37812.69812.69812.6981
Br34.46992.37814.98254.98254.9825
H41.09392.69814.98251.75801.7580
H51.09392.69814.98251.75801.7580
H61.09392.69814.98251.75801.7580

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 111.905
Mg2 C1 H5 111.905 Mg2 C1 H6 111.905
H4 C1 H5 106.932 H4 C1 H6 106.932
H5 C1 H6 106.932
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability