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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at CBS-Q
 hartrees
Energy at 0K-2812.415664
Energy at 298.15K-2812.409486
HF Energy-2809.264322
Nuclear repulsion energy166.051584
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 CBS-Q
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 3154 3154 36.26 95.20 0.01 0.03
2 A1 1314 1314 0.83 48.91 0.12 0.21
3 A1 624 624 77.76 14.64 0.11 0.21
4 A1 311 311 16.07 12.95 0.21 0.34
5 E 3228 3228 27.15 141.04 0.75 0.86
5 E 3228 3228 27.15 141.04 0.75 0.86
6 E 1595 1595 0.07 5.46 0.75 0.86
6 E 1595 1595 0.07 5.46 0.75 0.86
7 E 627 627 93.89 3.62 0.75 0.86
7 E 627 627 93.89 3.62 0.75 0.86
8 E 126 126 33.65 0.28 0.75 0.86
8 E 126 126 33.65 0.28 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 8276.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 8276.8 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 CBS-Q
ABC
5.35563 0.05468 0.05468

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.197
Mg2 0.000 0.000 -1.108
Br3 0.000 0.000 1.237
H4 0.000 1.013 -3.602
H5 0.877 -0.506 -3.602
H6 -0.877 -0.506 -3.602

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08954.43391.09081.09081.0908
Mg22.08952.34442.69252.69252.6925
Br34.43392.34444.94404.94404.9440
H41.09082.69254.94401.75411.7541
H51.09082.69254.94401.75411.7541
H61.09082.69254.94401.75411.7541

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 111.810
Mg2 C1 H5 111.810 Mg2 C1 H6 111.810
H4 C1 H5 107.035 H4 C1 H6 107.035
H5 C1 H6 107.035
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability