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

using model chemistry: QCISD(T)=FULL/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 QCISD(T)=FULL/cc-pVTZ
 hartrees
Energy at 0K-2812.357666
Energy at 298.15K 
HF Energy-2811.785352
Nuclear repulsion energy167.495178
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 QCISD(T)=FULL/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 3037 2906        
2 A1 1170 1120        
3 A1 635 608        
4 A1 315 302        
5 E 3097 2963        
5 E 3097 2963        
6 E 1465 1402        
6 E 1465 1402        
7 E 562 538        
7 E 561 537        
8 E 116 111        
8 E 116 111        

Unscaled Zero Point Vibrational Energy (zpe) 7817.9 cm-1
Scaled (by 0.9569) Zero Point Vibrational Energy (zpe) 7480.9 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 QCISD(T)=FULL/cc-pVTZ
ABC
5.42409 0.05553 0.05553

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.163
Mg2 0.000 0.000 -1.101
Br3 0.000 0.000 1.225
H4 0.000 1.014 -3.564
H5 0.878 -0.507 -3.564
H6 -0.878 -0.507 -3.564

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.06234.38831.09011.09011.0901
Mg22.06232.32612.66322.66322.6632
Br34.38832.32614.89494.89494.8949
H41.09012.66324.89491.75611.7561
H51.09012.66324.89491.75611.7561
H61.09012.66324.89491.75611.7561

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 111.550
Mg2 C1 H5 111.550 Mg2 C1 H6 111.550
H4 C1 H5 107.315 H4 C1 H6 107.315
H5 C1 H6 107.315
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability