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

using model chemistry: CID/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-2798.498035
Energy at 298.15K 
HF Energy-2798.249840
Nuclear repulsion energy167.432812
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 CID/3-21G*
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 3059 2846 17.52      
2 A1 1297 1207 0.38      
3 A1 636 592 61.06      
4 A1 324 301 11.31      
5 E 3133 2915 15.28      
5 E 3133 2915 15.28      
6 E 1575 1465 0.04      
6 E 1575 1465 0.04      
7 E 661 615 108.23      
7 E 661 615 108.23      
8 E 125 116 25.28      
8 E 125 116 25.28      

Unscaled Zero Point Vibrational Energy (zpe) 8151.1 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 7584.6 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 CID/3-21G*
ABC
5.30303 0.05533 0.05533

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.182
Mg2 0.000 0.000 -1.089
Br3 0.000 0.000 1.225
H4 0.000 1.025 -3.573
H5 0.888 -0.513 -3.573
H6 -0.888 -0.513 -3.573

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.09234.40701.09751.09751.0975
Mg22.09232.31472.68692.68692.6869
Br34.40702.31474.90654.90654.9065
H41.09752.68694.90651.77601.7760
H51.09752.68694.90651.77601.7760
H61.09752.68694.90651.77601.7760

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 110.881
Mg2 C1 H5 110.881 Mg2 C1 H6 110.881
H4 C1 H5 108.026 H4 C1 H6 108.026
H5 C1 H6 108.026
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability