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

using model chemistry: CCSD/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 CCSD/cc-pVTZ
 hartrees
Energy at 0K-2812.256546
Energy at 298.15K 
HF Energy-2811.785605
Nuclear repulsion energy165.924495
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 CCSD/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 3033 2855 22.85      
2 A1 1179 1110 0.70      
3 A1 612 576 81.57      
4 A1 305 287 13.92      
5 E 3112 2929 16.36      
5 E 3112 2929 16.36      
6 E 1470 1384 0.10      
6 E 1470 1384 0.10      
7 E 578 544 74.98      
7 E 578 544 74.98      
8 E 102 96 30.57      
8 E 102 96 30.57      

Unscaled Zero Point Vibrational Energy (zpe) 7826.6 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 7366.4 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 CCSD/cc-pVTZ
ABC
5.40392 0.05444 0.05444

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.195
Mg2 0.000 0.000 -1.112
Br3 0.000 0.000 1.237
H4 0.000 1.016 -3.597
H5 0.880 -0.508 -3.597
H6 -0.880 -0.508 -3.597

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08254.43211.09261.09261.0926
Mg22.08252.34962.68452.68452.6845
Br34.43212.34964.94014.94014.9401
H41.09262.68454.94011.75931.7593
H51.09262.68454.94011.75931.7593
H61.09262.68454.94011.75931.7593

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 111.611
Mg2 C1 H5 111.611 Mg2 C1 H6 111.611
H4 C1 H5 107.249 H4 C1 H6 107.249
H5 C1 H6 107.249
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability