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/daug-cc-pVTZ

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/daug-cc-pVTZ
 hartrees
Energy at 0K-2812.289533
Energy at 298.15K 
HF Energy-2811.786398
Nuclear repulsion energy165.674345
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/daug-cc-pVTZ
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 3010 3010        
2 A1 1157 1157        
3 A1 606 606        
4 A1 302 302        
5 E 3094 3094        
5 E 3094 3094        
6 E 1457 1457        
6 E 1457 1457        
7 E 571 571        
7 E 571 571        
8 E 104 104        
8 E 103 103        

Unscaled Zero Point Vibrational Energy (zpe) 7762.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 7762.0 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 MP4/daug-cc-pVTZ
ABC
5.36802 0.05429 0.05429

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/daug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.200
Mg2 0.000 0.000 -1.114
Br3 0.000 0.000 1.239
H4 0.000 1.019 -3.600
H5 0.883 -0.510 -3.600
H6 -0.883 -0.510 -3.600

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08554.43871.09511.09511.0951
Mg22.08552.35322.68702.68702.6870
Br34.43872.35324.94564.94564.9456
H41.09512.68704.94561.76521.7652
H51.09512.68704.94561.76521.7652
H61.09512.68704.94561.76521.7652

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 111.466
Mg2 C1 H5 111.466 Mg2 C1 H6 111.466
H4 C1 H5 107.405 H4 C1 H6 107.405
H5 C1 H6 107.405
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability