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

using model chemistry: QCISD/TZVP

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/TZVP
 hartrees
Energy at 0K-2812.141100
Energy at 298.15K 
HF Energy-2811.717225
Nuclear repulsion energy164.452897
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/TZVP
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 3052 2916 34.35      
2 A1 1233 1178 1.11      
3 A1 590 564 69.76      
4 A1 292 279 16.93      
5 E 3133 2993 21.27      
5 E 3133 2993 21.27      
6 E 1446 1382 0.57      
6 E 1446 1382 0.57      
7 E 609 581 80.29      
7 E 609 581 80.29      
8 E 103 99 38.30      
8 E 103 99 38.30      

Unscaled Zero Point Vibrational Energy (zpe) 7874.3 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 7522.3 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/TZVP
ABC
5.41951 0.05349 0.05349

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/TZVP

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.218
Mg2 0.000 0.000 -1.128
Br3 0.000 0.000 1.249
H4 0.000 1.014 -3.626
H5 0.878 -0.507 -3.626
H6 -0.878 -0.507 -3.626

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.09084.46751.09311.09311.0931
Mg22.09082.37672.69622.69622.6962
Br34.46752.37674.97934.97934.9793
H41.09312.69624.97931.75681.7568
H51.09312.69624.97931.75681.7568
H61.09312.69624.97931.75681.7568

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 111.883
Mg2 C1 H5 111.883 Mg2 C1 H6 111.883
H4 C1 H5 106.956 H4 C1 H6 106.956
H5 C1 H6 106.956
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability