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

using model chemistry: MP4/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/cc-pVTZ
 hartrees
Energy at 0K-2812.274498
Energy at 298.15K 
HF Energy-2811.785568
Nuclear repulsion energy165.823878
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/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 3017 2924        
2 A1 1161 1125        
3 A1 611 592        
4 A1 305 295        
5 E 3101 3005        
5 E 3100 3005        
6 E 1456 1411        
6 E 1456 1411        
7 E 573 555        
7 E 573 555        
8 E 100 97        
8 E 100 97        

Unscaled Zero Point Vibrational Energy (zpe) 7775.4 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 7535.9 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/cc-pVTZ
ABC
5.38644 0.05439 0.05439

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.196
Mg2 0.000 0.000 -1.113
Br3 0.000 0.000 1.238
H4 0.000 1.017 -3.599
H5 0.881 -0.509 -3.599
H6 -0.881 -0.509 -3.599

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08264.43391.09421.09421.0942
Mg22.08262.35132.68542.68542.6854
Br34.43392.35134.94244.94244.9424
H41.09422.68544.94241.76221.7622
H51.09422.68544.94241.76221.7622
H61.09422.68544.94241.76221.7622

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 111.589
Mg2 C1 H5 111.589 Mg2 C1 H6 111.589
H4 C1 H5 107.273 H4 C1 H6 107.273
H5 C1 H6 107.273
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability