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: B2PLYP=FULL/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at B2PLYP=FULL/6-31G
 hartrees
Energy at 0K-2810.925789
Energy at 298.15K 
HF Energy-2810.872857
Nuclear repulsion energy164.105202
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 B2PLYP=FULL/6-31G
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 3048 3048 23.86 118.51 0.00 0.00
2 A1 1261 1261 0.13 55.12 0.07 0.13
3 A1 618 618 39.85 16.85 0.07 0.13
4 A1 299 299 12.34 21.93 0.21 0.35
5 E 3139 3139 16.37 137.00 0.75 0.86
5 E 3139 3139 16.37 137.00 0.75 0.86
6 E 1524 1524 0.48 8.12 0.75 0.86
6 E 1524 1524 0.48 8.11 0.75 0.86
7 E 666 666 102.25 3.27 0.75 0.86
7 E 666 666 102.26 3.27 0.75 0.86
8 E 131 131 26.37 0.05 0.75 0.86
8 E 131 131 26.37 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8073.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8073.4 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 B2PLYP=FULL/6-31G
ABC
5.30872 0.05343 0.05343

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.214
Mg2 0.000 0.000 -1.140
Br3 0.000 0.000 1.251
H4 0.000 1.025 -3.605
H5 0.888 -0.512 -3.605
H6 -0.888 -0.512 -3.605

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.07354.46501.09711.09711.0971
Mg22.07352.39152.66952.66952.6695
Br34.46502.39154.96354.96354.9635
H41.09712.66954.96351.77511.7751
H51.09712.66954.96351.77511.7751
H61.09712.66954.96351.77511.7751

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 110.908
Mg2 C1 H5 110.908 Mg2 C1 H6 110.908
H4 C1 H5 107.997 H4 C1 H6 107.997
H5 C1 H6 107.997
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability