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

using model chemistry: CCSD(T)/cc-pVQZ

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)/cc-pVQZ
 hartrees
Energy at 0K-2812.364971
Energy at 298.15K 
HF Energy-2811.792243
Nuclear repulsion energy165.961869
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)/cc-pVQZ
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 3015 2924        
2 A1 1160 1124        
3 A1 608 590        
4 A1 302 293        
5 E 3097 3004        
5 E 3097 3003        
6 E 1455 1411        
6 E 1455 1411        
7 E 573 556        
7 E 572 555        
8 E 104 101        
8 E 103 100        

Unscaled Zero Point Vibrational Energy (zpe) 7770.3 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 7534.9 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)/cc-pVQZ
ABC
5.39364 0.05448 0.05448

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -3.193
Mg2 0.000 0.000 -1.112
Br3 0.000 0.000 1.237
H4 0.000 1.017 -3.595
H5 0.881 -0.508 -3.595
H6 -0.881 -0.508 -3.595

Atom - Atom Distances (Å)
  C1 Mg2 Br3 H4 H5 H6
C12.08124.43041.09331.09331.0933
Mg22.08122.34922.68332.68332.6833
Br34.43042.34924.93834.93834.9383
H41.09332.68334.93831.76101.7610
H51.09332.68334.93831.76101.7610
H61.09332.68334.93831.76101.7610

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 111.574
Mg2 C1 H5 111.574 Mg2 C1 H6 111.574
H4 C1 H5 107.289 H4 C1 H6 107.289
H5 C1 H6 107.289
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability