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

using model chemistry: CCSD(T)/aug-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(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-2812.286576
Energy at 298.15K 
HF Energy-2811.786278
Nuclear repulsion energy165.659063
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(T)/aug-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 3008 2917        
2 A1 1160 1125        
3 A1 607 588        
4 A1 302 292        
5 E 3087 2995        
5 E 3087 2994        
6 E 1459 1415        
6 E 1459 1415        
7 E 574 556        
7 E 573 556        
8 E 103 100        
8 E 102 99        

Unscaled Zero Point Vibrational Energy (zpe) 7759.7 cm-1
Scaled (by 0.9699) Zero Point Vibrational Energy (zpe) 7526.2 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(T)/aug-cc-pVTZ
ABC
5.37001 0.05428 0.05428

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.199
Mg2 0.000 0.000 -1.115
Br3 0.000 0.000 1.239
H4 0.000 1.019 -3.601
H5 0.882 -0.509 -3.601
H6 -0.882 -0.509 -3.601

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08454.43841.09521.09521.0952
Mg22.08452.35382.68682.68682.6868
Br34.43842.35384.94604.94604.9460
H41.09522.68684.94601.76491.7649
H51.09522.68684.94601.76491.7649
H61.09522.68684.94601.76491.7649

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 111.506
Mg2 C1 H5 111.506 Mg2 C1 H6 111.506
H4 C1 H5 107.362 H4 C1 H6 107.362
H5 C1 H6 107.362
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability